This is the question I was given a homework assignment:
2) Two objects are connected by a light string that passes over a frictionless pulley. Draw a Free Body Diagram of both objects. If the inclide is frictionless and if m1= 2kg, m2=6kg and angle theta=55 degrees, find:
(a) the...
This is the question I was given a homework assignment:
2) Two objects are connected by a light string that passes over a frictionless pulley. Draw a Free Body Diagram of both objects. If the inclide is frictionless and if m1= 2kg, m2=6kg and angle theta=55 degrees, find:
(a) the...
A 0.64 kg bundle starts up a 10.08° incline with 61.7 J of kinetic energy. How far will it slide up the plane if the coefficient of friction is 0.373?
I found the frictional force and the force of gravity working against the bundle by f = N*u and F = ma to be 3.6026 and 1.09886. I added...
A 12kg block is released from rest on an inclined plane with angle 35. Acceleration of the block is 1.23457 The acceleration of gravity is 9.8m/2^2.
What is the coefficient of kinetic friction for the incline?
I found the normal force (12*9.8*cos35)=96.33228...
Wondering if someone could help me with my last set problem? I've been looking at it for quite some time now. The incoming force on the block is confusing me...as a result, I'm not sure how to set it up. I've worked it with the force parallel to the incline as well as perpendicular - but not as...
kayyy these are some hwk questions i don't understand. please help :cry:
1. A person has a choice of either pushing or pulling a sled at a constant velocity. Friction is present. If the angle beta is the same in both cases, does it require less force to push or pull? explain.
I believe...
A block of mass m is placed in a smooth-bored spring gun at the bottom of the incline so that it compresses the spring by an amount x_c. The spring has spring constant k. The incline makes an angle theta with the horizontal and the coefficient of kinetic friction between the block and the...
Hi. Got this quite interesting problem:
A projectile is launched at some velocity at an angle a over a plane inclined at an angle b.
1. How far, measured along the incline, will the projectile fly?
2. What angle a will give the longest distance?
Any suggestions/hints on possible...
A 36 kg block of ice slides down a frictionless incline 1.2 m long and 0.48 m high. A worker pushes up against the ice, parallel to the incline, so that the block slides down at constant speed.
(a) Find the magnitude of the force exerted by the worker.
(b) Find the work done on the block by...
I don't know a lot about physics so please excuse me. Let's say you have a marble rolling down a frictionless plane of an incline θ degrees from the horizontal. It begins at a height ho with an initial velocity of 0. I want to find the velocity of the marble at any height along the way. What...
The problem is:
two identical blocks tied together with a string which passes over a pulley at the crest of the inclined planes, one of which makes an angle q1 = 18° to the horizontal, the other makes the complementary angle q2 = 72°.
If there is no friction anywhere, with what...
1) A thin hoop of radius r = 0.13 m and mass M = 8.1 kg rolls without slipping across a horizontal floor with a velocity v = 4.0 m/s. It then rolls up an incline with an angle of inclination theta = 33o. What is the maximum height h reached by the hoop before rolling back down the incline?
2)...
Jill has just gotten out of her car in the grocery store parking lot. The parking lot is on a hill and is tilted 3 degrees. Fifty meters downhill from Jill, a little old lady let's go of a fully loaded shopping cart. The cart, with frictionless wheels, starts to roll straight downhill. Jill...
I need help here! Please!
Hola! I'm in desperate need for help, so por favor senor/ita!
A 2kg block situated on a rough incline (angle of elevation is equal to 37) is connected to a spring of negligible mass having a spring constant of 100N/m. The pulley is frictionless. The block is released...
A 6 kg box slides down a long, frictionless
incline of angle 34 degrees. It starts from rest at time
t = 0 at the top of the incline at a height 17 m
above the ground. Find the distance the box travels during
the interval 0 < t < 0.6 seconds.
Hi Guys,
For a physics practical investigation I will be investigating the change in height (angle) of an inclined plane and the time taken to travel down the incline.
Now for my hypothesis and results I am a bit stuck. For the hypothesis I will be using the following formula...
Can anyone help me with theses problems?
1. A 500 g cart is released from rest 1.0 m from the bottom of a frictionless, 30 ramp. The cart rolls down the ramp and bounces off a rubber block at the bottom. The figure shows the force during the collision.
After the cart bounces, how far does...
A 2.0 kg package is released on a 53.1◦
incline, 4.0 m from a long spring with force
constant 120 N/m that is attached at the
bottom of the incline. The coefficient of
friction between the package and the incline
are µs=0.40 and µk=0.20. The mass of the
spring is negligible.
a. Show that...
Can someone tell me if I did this right?
An object of mass m is hung from a rope that passes over a pulley at the top of a ramp and is attached to a block of mass M.
(a) Assume m is large enough that the block accelerates up the ramp. Find an expression for the block’s acceleration...
My project's requirement isn't limited to a mousetrap car but that's what I've built. My car has to go up an incline of 5 degrees. I'm aiming for a distance of 14 meters. My car right now can go on a level surface but can barely pass the 1.5 m on the incline!
My dad is helping me with the...
I am having a lot of trouble with this problem:
What is the minimum work needed to push a 1147 kg car 376 m up a 15.1o incline if the effective coefficient of friction is 0.23?
I thought that it was (m)(.23)(sin 15.1)(376) but that isn't right. Any help would be appreciated.
Well, right now I'm working on one helluva a problem... Basically, a projectile is given a velocity of V sub "o" (Vo). The launch angle is gamma degrees above an surfaced which is inclined theta degrees above the horizontal. I'm tasked with finding its range along the inclined surface as well...
Hi,
Just a quick question that I am stuck on. If the mass were increased on a trolley moving downhill, would the acceleration increase?
Since F = Ma...i'd say it would, but just to make sure :P
Thanks
Question is:
A wedge makes an angle theta to the horizontal. it has a mass M2 and can slide along the horizontal. A mass M1 slides along the frictionless surface of the incline. What are the expressions for the acceleration of the wedge and the mass M1?
I am just puzzled. Any suggestions...
Question: Suppose you have measured the time (delta T) required for a glider to travel several distances (delta X) down an inclined plane. After plotting the data points on a graph of delta X vs. (delta T)^2, you find the slope of the best fitting straight line is 15cm/s^2. What is the...
Need Help Here!
A sphere or mass, m and radius r rolls along a horizontal surface with a constant velocity, Vi approaches an incline with (angle theta). ie bottom angle :smile: If it rolls without slipping,
a) what is the maximum distance,x it will travel on the incline?
b) If it begins to...
there's a 3kg mass on a 30 degree frictionless incline. The mass travels d distance and hits a spring with k=400N/m. The spring contracts 0.2 m and brings the block to a stop.
I need to find the distance the block traveled.
F=kx
F=400*.2
F=80N
so the block has to hit with 80N.
what...
This is just a question I made up because there'll probably be one like this on our final exam.
A 5 kg block is on an incline plane of 50 degrees. coeffecient of friction is 0.5. Will it slide?
N = mg cos(50)
N = 31.529
friction = mu * N
friction = 15.764
force down = ma
f =m g...
You have a block on the incline plane 130 Newtons and it's attached by a rope through a "frictionless" pulley to another block of 45 Newtons hanging of the side of a plane. The question is what angle pheida has to be in order for a 130 Newtons block to start sliding up the plane (not...
I am having real problems understanding friction and how it relates to problems. Right now all I have to work with is a Cal-oriented book, but the class I'm in is taught with just Trig. I am completely lost. Your help would be greatly appreciated.
Starting from rest, a 4.33 kg block slides...
A 26.0 kg box slides 4.0 m down the frictionless ramp shown in the figure, then collides with a spring whose spring constant is 170 N/m.
1-- What is the maximum compression of the spring?
2-- At what compression of the spring does the box have its maximum velocity?
this is killing...
anyone physics experts know how to do this questions?
A force of 25 N parallel to a 35degrees inclined plane pulls a 2.5 kg block 5 m up the plane at
constant speed.
(a) How much work has been done by the 25 N force?
(b) much work has been done by friction?
(c) How much work has been done...
Coin Rolling Up Incline, no mass given!?
1. [SFHS99 8.P.46.] A coin with a diameter of 3.40 cm rolls up a 27.0° inclined plane. The coin starts with an initial angular speed of 55.0 rad/s and rolls in a straight line without slipping. How far does it roll up the inclined plane?
Having some...
A block of mass m = 2.20 kg slides down a 30 degree incline which is 3.6 m high. At the bottom it strikes a block of mass M = 7 kg which is at rest on the horizontal surface. If the collision is elastic and friction can be ignored, determine the:
speeds of the two blocks
and
how far...
i've been trying to figure this question out for about half an hour now and I'm still where I started. if some one could help me i'd be much obliged.
a 17 kg box is released on a 35 degree incline and accelerates down the incline at .270 m/s^2. Find the friction force impeding its motion...
Hey guys this question has been stumping me to death! Any help at all would be greatly appreciated.
A mountain climber has tied himself to a rock and has begun to lower himself down a cliff. The rope passes over a frictionless pulley. At time t=0, the rock and the mountain climber are...
Whats the net force of an object going UP an incline? I don't have an applied force, just the velocity, mass, and coeffieciant of friction. I solved for the Force of friction but how do i solve for Fnet? I don't think its
Fnet = Fg(parralel) - Ffriction cause Fg is still pulling down?
Two identical blocks tied together with a string which passes over a pulley at the crest of the inclined planes, one of which makes an angle q1 = 20° to the horizontal, the other makes the complementary angle q2 = 70°. If there is no friction anywhere, with what acceleration do the blocks move...
The problem is:
We have a 2kg block on a 30 degree incline, with the coefficient of static friction= 0.5. I am supposed to determine the maximum and minimum values of an applied force at 30 degrees to the plane that will keep the block stationary.
My positive x direction is down the ramp...
A 2.0 kg wood block is launched up a wooden ramp that is inclined at a angle. The block's initial speed is 10 m/s . The coefficient of kinetic friction of wood on wood is .200.
So that's the intro... The first question is to get the hight it reachers on the incline and I got that right =...
An inclined plane that makes an angle of 28° to the horizontal is mounted on wheels. A small block of mass m = 1.3 kg rests on the plane, held there by a coefficient of static friction µ = 0.7.
The plane is accelerating to the right. What is the minimum acceleration in order that the block...
There's a block of mass M that's pulled up an incline by a force T. The block starts from rest and is pulled a distance L by the force T. The incline, which is frictionless, makes an angle (a) with respect to the horizontal.
1) Write down the work done by force T.
That would just be W =...
I need help with the following problem:
The block shown in fig 4-48 lies on a smooth plane tilted at an angle 22 degrees to the horizontal. (a)Determine the acceleration of the block as it slides down the plane. (b) If the block starts from rest 9.10m up the plane from its base, what will be...
This is supposed to be a hard question...
A 1900kg car experiences a combinded force of air resistance and friction that has the same magnitude whether the car goes up or down a hill at 27m/s. Going up a hill, the car's engine needs to produce 47 hp (1horsepower=745.7 Watts) more power to...
Hi all,
I need help with question
I need to calculate the work done in pushing a mass up an incline a distance d with slope theta, when the coefficient of kinetic friction is 0.1 and the force is directed 1) parallel to the slope, 2) the force is directed at an angle phi to the slope...
There is this question that I feel like it should be easy, but I can't get the right answer. There is a box sitting on a horizontal surface attached to another box that is sitting on a "decline" The horizontal box is bigger than the other one. a horizontal force is applied to the horizontal...
How can I find the velocity of an object at the bottom of a frictionless incline?
m=108kg
Initial Velocity= 4.6m/s
Length of ramp=755m
Incline=downwards at 19.6 degrees
I keep telling myself I'm not unintelligent... But this keeps replying otherwise
Need help on this one:
An object is fired up a frictionless ramp at 60 degrees. If the intial velocity is 35m/s, how ong does the object take to return to the starting point?
I figured out the Initial y and x velocities.
What i don't understand is how to use acceleration in this...
The homework problem is confusing me a little bit especially b and c.
I have attached the picture of the incline plane and object.
Based on figure #1, assume the block is sliding down the inclined plane and that there is kinetic friction associated with the block and plane. Label all...