Ramp Definition and 672 Threads

Homework Statement Homework Equations ΣFΔt=mΔv ΣF=ma v=d/t The Attempt at a Solution I already found the following for previous questions: mg=-661.9 mgx=-3594.37 mgy=-649.91 Fx=2192.69 Fy=-1250.69 FF=-365.44 Vf=257.18 ΣFx=-1767.12 ATTEMPT #1 v=d/t d=vt d=(257.18)(10) d=2571.80 (incorrect)...

Homework Statement Two identical balls, one is thrown at angle α up a frictionless surface, the other one is thrown at the same angle up in the air. Both have the same initial velocity. A. Which one travels further? Explain. B. Is the mechanical energy of the first ball conserved? Explain...

Homework Statement http://i41.photobucket.com/albums/e271/FireFox988/l10g10.gif The blocks shown in the figure below are connected by a string of negligible mass passing over a pulley of radius r = 0.250 meter and moment of inertia I. The block on the frictionless incline is moving up with a...

Homework Statement An object of mass m is allowed to slide down a frictionless ramp of angle Θ, and its speed at the bottom is recorded as v. If this same process was followed on a planet with twice the gravitational acceleration as Earth, what would be its final speed? Multiple Choice...

Homework Statement I am tasked with finding the theoretical final speed of a car rolling down a hill using energy calculations. I am given the angle of the incline, the height of the ramp, the length of the hill (horizontal and actual length) and the mass of the car. Also, the car is starting...

Homework Statement A 3 kg wood block is launched up an inclined wooden ramp that has an angle of 25° to the horizontal. the Block's initial speed is 12 m/s and the kinetic coefficient of friction is 0.2. What is the vertical height the block reaches above it's starting point? What speed does it...

Homework Statement The first order ramp unit response is shown in the graph below. Determine: 1. The transfer function. 2. Plot the error function e(t) then determine its maximum magnitude and the time http://s24.postimg.org/cdbhqm80j/Capture.png Homework Equations G(s)=(1/T)/(S+1/T) ... G(s)...

Homework Statement A 2kg block slides down a 3 m long ramp that is inclined at 40 degrees. The coefficient of friction is .2 What is the velocity when it hits the bottom of the ramp? Homework Equations Kinetic = 1/2 mv^2 Potential = mgh Work of friction: Fnμ*(displacement) The Attempt at a...

Homework Statement Let's say that a ramp is modeled using the equation y = cx2, where c is a constant. Assuming a motorcycle starts at speed vi, displacement xi=0 and launches off the ramp at a horizontal displacement of xf, what is the motorcyclists speed and direction? Homework Equations...

Homework Statement The semicylinder of mass m and radius r lies on the rough inclined plane for which ϕ = 10∘ and the coefficient of static friction is μs = 0.3. Determine if the semicylinder slides down the plane, and if not, find the angle of tip θ of its base AB Homework Equations f=uN The...

Homework Statement A small block sits at the midpoint of a 2.0 m plank lying on a level floor. A student slowly raises one end of the plank until the block starts to slide. At that instant, the raised end is 0.55 m above the floor. Find the coefficient of static friction between block and...

A Ford Ranger with a mass of 2430 kg is traveling at a velocity of 85 mph down a mountain road. The brakes fail and the driver elects to use a "run away" truck ramp to stop the vehicle. The ramp has an incline of 15.0 degrees. What is the minimum length the ramp must be in order for this...

Homework Statement A ball is placed at the top of an 8.5 meter slope, which is at an angle of 2.2 degrees. What is the ball's acceleration? θ of ramp=2.2 length of ramp=8.5 initial velocity (x and y)=0Homework Equations a = (v - v0)/t The Attempt at a Solution I tried for 45 minutes to solve...

1. Homework Statement We are dealing with a block of 20 kg mass on a ramp that is at an angle of 30 degrees. The spring constant given is 500 N/m. Picture- https://flic.kr/p/A3aCsM The only difference is that that we are supposed to be holding the spring stationary, it isn't attached to a...

Homework Statement A skater jumps off a quarterpipe ramp and reaches 5m over the ramp. We can assume that he jumps in a vertical line. Find the speed the skater had before jumping off the ramp. Homework Equations https://www.physicsforums.com/threads/introductory-physics-formulary.110015/ All...

Homework Statement A ball is shot out of a gun with an initial speed of 110 m/s. The acceleration of ball is -6 m/s^2 as it goes up an inclined plane of 1 m, which makes a 30 degree angle with the horizontal. Once the ball reaches the top of the inclined plane, it is launched off onto another...

Homework Statement A 72 kg skier leaves the end of a ski-jump ramp with a velocity of 24 m/s directed 25◦ above the horizontal. The skier returns to the ground at a point that is 14 m below the end of the ramp with a total speed of 22 m/s. (a) What is the rate at which the gravitational force...

Homework Statement A 1070-kg car is held in place by a light cable on a very smooth (frictionless) ramp, as shown in the figure(Figure 1) . The cable makes an angle of 31.0 ∘above the surface of the ramp, and the ramp itself rises at 25.0 ∘ above the horizontal. [/B] http://imgur.com/gkOQuRq...

An inclined plane of angle θ = 20.0° has a spring of force constant k = 525 N/m fastened securely at the bottom so that the spring is parallel to the surface as shown in the figure below. A block of mass m = 2.31 kg is placed on the plane at a distance d = 0.312 m from the spring. From this...

Hello, In this simulation (link is below) the graph of the potential energy with respect to position U(x) when there is no friction on the ramp looks like the graph of potential energy of Hooke's Law spring U(x)=(1/2)KX^2). For the spring, the negative of the derivative is equal to the...

Homework Statement Homework Equations The picture is all we know about the entire system, we need to derive an expression for the acceleration of ramp M. There is no friction anywhere. The ramp is free to move on the surface beneath it. The Attempt at a Solution I drew the free body...

I have been teaching Physics at the introductory level now for over 30 years. In that time I have taught a lot of labs on friction. Using the small masses readily available in the lab and using motion detectors to measure the velocity of the objects neither I nor any of my students has ever...

Homework Statement So, we did a lab wherein we rolled a 1.001kg cart down a 24.4 degree slope. We used a ticker tape timer and are trying to find the frictional force of the ticker tape timer alone. The problem is, I can't figure out how to find the acceleration for the equation Homework...

Homework Statement Here is an imgur link to my assignment: http://imgur.com/N0l2Buk I also uploaded it as a picture and attached it to this post. Homework Equations u_c (t) = \begin{cases} 1 & \text{if } t \geq c \\ 0 & \text{if } t < c \end{cases} The Attempt at a Solution Question 1.1 -...

Hi! I'd just please like to know the most efficient way to conduct my experiment. See, my research question is "for what angle is horizontal speed the fastest?" We all know that the steeper a hill is, the faster an object accelerates. Obviously a 90 degree angle won't do much. I will try to...

Homework Statement The dimension h is to be determined to that a worker can comfortably slides boxes weighing up to 106 lb up and down a frictionless incline. If the worker can apply a 50 lb horizontal force to the box, what is the largest value h should have? Hint given: Before taking any...

You have a piano that you have just pushed to the top of the 3m long ramp that goes into the truck. The ramp is at a 20-degree angle. You think your friend has a grip on it and she think you do when you all let go. How long do you have before the piano gets to the bottom of the ramp? Assume...

Homework Statement Hi, I know the acceleration of steel ball rolling down the inclined track is 5/7 * gsin(theta). But is it possible to find the acceleration of ball rolling on the inclined track just by using the distance traveled on the horizontal plane(attached to the Inclined track) and...

Homework Statement A ball bearing rests on a ramp fixed to the top of a car which is accelerating horizontally. The position of the ball bearing relative to the ramp is used as a measure of the acceleration of the car. Show that if the acceleration is to be proportional to the horizontal...

Homework Statement A block of 55 g is sliding down a ramp of 35 degrees of inclination. The hypotenuse of the ramp is 63 cm and the height is 36 cm. vi = 0 as the block starts at rest. Homework Equations vf = vi + a(t) d = vi*t + (a(t)^2)/2 kinetic energy = (mv^2)/2 The Attempt at a Solution...

Homework Statement A 90 kg box is pushed by a horizontal force F at constant speed up a ramp inclined at 28°, as shown. Determine the magnitude of the applied force. when the ramp is frictionless. when the coefficient of kinetic friction is 0.18 Homework Equations F=mg FN=mg μ= Fk/FN The...

If a constant force is applied to an object and the force is pushing the object up a inclined ramp with constant velocity what is the acceleration if mass is unknown? F=ma F=m (1m/s^2) If i apply this equation then acceleration is 1m/s^2. Am i applying this formula correctly? thanks

Homework Statement A block of mass m is held at rest at height h on an inclined plane of mass M, placed on a horizontal surface as shown. The block is then released. Find the speed of the inclined plane v_{I} just as the block slides off of it. Neglect all frictional forces. Express your...

Hello, 1. Homework Statement A spherical continuous ball is sliding with a constant velocity v along a frictionless lane. Thereafter it enters an inclined surface (the angle between the surface and the horizontal plane is α) with the coefficient of friction µ between the ball and the surface...

Homework Statement A ski jumper acquires a speed of 119.0 km/hr by racing down a steep hill. He then lifts off into the air from a horizontal ramp. Beyond this ramp, the ground slopes downward at an angle of θ = 45 degrees. Homework Equations Assuming the skier is in free-fall motion after he...

Homework Statement [/B] A block with mass m1 = 9.2 kg is on an incline with an angle θ = 36° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: μk = 0.33 and μs = 0.363. 1.) When there is no friction...

So this sounds homework question but I promise its not. At least its not mine. I saw it on a website because someone made it funny because of what they answered (drew an elephant if you know the one I'm talking about) Anyway, so the problem was a block of mass m = 5 kg falls starting at rest at...

I have a question. If a put a marble at the top of a ramp, will the angle that ramp makes with the horizontal affect the velocity of the marble when it arrives at the bottom of the ramp? I am suspecting no, since the gravitation potential energy does not change as we change the angle of the...

Homework Statement Consider a ramp at an angle of 30° to the horizontal with a mass m sitting on it without sliding: What is the force exerted by the ramp on the mass? Then resolve this force into vertical and horizontal components. Homework Equations Net forces equating to zero. The Attempt...

If a ball rolls down a U-shaped ramp from a height h, why does it not reach a height h on the other side? (Frictionless ramp) It will reach a height of (5/7)*h, but I'm not sure why. Some of the potential energy is converted to rotational and some is translational kinetic, but why do they not...

Hi, friends! A block having mass ##m## frictionlessly slips from height ##h## on a ramp of mass ##M##, which has an angle ##\theta## with the floor, where it slips with no friction. I would like to prove that, as my book says, the ramp's speed when the block leaves it is...

Hello, So my issue is as follows: You have a car going at a constant speed and the right side of the car hits a ramp which causes that side to elevate and cause the car to rotate about its x axis. What I need to figure out is how fast does the car need to hit the ramp to cause a rollover...

A block is at rest on a ramp with an incline of 30 degrees above the horizontal. Find the force of static friction between the block and the ramp. One might be tempted to say that it equals the resultant force down the ramp: mg sin30. Or... A book is at rest on a table. What is the net...

Homework Statement http://imgur.com/VwoDF58 Homework Equations How would I calculate the velocity the box gets off the ramp? I believe I need to use Vf = Vo + 2 a x a is gravity so it is -9.8, correct? but what do i put in as x? 5, which is the length of the ramp, or 4, the base, or 3 the...

The question is `For the same time interval , how did the area beneath the velocity-time graph compare with the displacement of the cart? How should it compare?` I don't understand what they`re asking me to do, please help.

Homework Statement Two cans of the same size, mass, and shape are released from a ramp at the same height. One of the cans has milk and the other has refried beans. Which will reach the bottom first? Homework Equations Ktotal = Ktranslation + Krotational The Attempt at a Solution Since they...

Homework Statement You are helping your friend move, using a ramp to move boxes from the ground to the moving truck. You give a 26kg box a shove so it moves at 1.4mhttps://s3.lite.msu.edu/adm/jsMath/fonts/cmmi10/alpha/144/char3D.pngs at the bottom of the ramp. The angle that the ramp makes...

Fiona rides her skate board up a ramp. She begins with a speed of 8.0m/s but slows with a constent deccsalerarion of 2.0m/s. She tracked some distance up the ramp before coming to rest, then rolled down again. Ignoring air resistance and friction; calculate. A) the distance that Fiona travels up...

Homework Statement A ramp with mass M rests on a frictionless floor, and another mass m rests on the ramp itself. There is no friction between the ramp and the mass. Find the acceleration of ramp and mass m. The ans are given but I don't understand them. For the acceleration of the ramp, why is...

[Mod note: Thread moved from New Member Introductions, so no template] I have a qns whereby a ramp of mass M rests on a frictionless floor and a mass m rests on the ramp, with no friction in between the mass and ramp. I need to find the acceleration of ramp M and mass m. I have the answers but...