Inclined plane Definition and 812 Threads

Homework Statement The included image shows the problem in its entirety. The problem is from a physics review book that I have which also includes the answer, but the explanation is beyond me. I was hoping someone could walk me through the solution. T, the rope tension (constant...

Homework Statement A small sphere is dropped from rest at a height 'h' above a plane inclined at an angle θ to the horizontal ( < 90degrees ). Given that the sphere loses no energy on impact, show that the distance down the plane between this impact and the next is 8hSinθ. Homework...

Homework Statement A solid ball is at the top of a 2 meter inclined plane. Assuming friction is negligible, what is its linear speed (m/s) as it reaches the bottom? Homework Equations PE=mgh KE=.5mv^2 RKE=.5Iw^2 I of ball=.4mr^2 w=v/r The Attempt at a Solution Pretty much what...

1. Homework Statement The diagram shows a 5kg block of lead released from rest at the top of an incline. The block has a speed of 6 m/s when it reaches the bottom. The angle between the slope and the ground is 40° and the slope is 10 m long. a) What is its PE at the top? b) What is its KE at...

Homework Statement The diagram shows a 5kg block of lead released from rest at the top of an incline. The block has a speed of 6 m/s when it reaches the bottom. The angle between the slope and the ground is 40° and the slope is 10 m long. a) What is its PE at the top? b) What is...

Homework Statement Two 2kg blocks are joined by a massless cord and pulley, ignoring friction, determine each block's acceleration using a free body diagram for each. Picture for visual aid: http://img27.imageshack.us/img27/2653/86460048.png or a link...

Homework Statement cubical block of mass m ,edge a,slides down the inclined plane of inclination \varphi with uniform velocity. torque of normal reaction on the block about its centre is? The Attempt at a Solution Torque=mgcos\varphi X a/2 mgcos\varphisin\varphia/2 Book says...

Homework Statement A worker pushes a crate weighing 93 N up an inclined plane. The worker pushes the crate horizontally, parallel to the ground. a. The worker exerts a force of 85 N, how much work does he do? (A: 340 J) b. How much work is done by gravity? (A: -280 J) c. The coefficient...

Homework Statement * This is for my project. The sled is placed at an inclined surface at an angle of theta. The sled is attatched to a rope, which i will be pulling to find out the minimum force to start the sled moving. i would assume that when I am tryin to find the jusssttt jussst...

Homework Statement A 11.0 kg crate is pulled up a rough incline with an initial speed of 1.3 m/s. The pulling force is 121.0 N parallel to the incline, which makes an angle of 12.6◦ with the horizontal. The coefficient of kinetic friction is 0.31 and the crate is pulled a distance of 8.0 m...

1. A 5kg block rests on a smooth plane inclined at an angle of 20degrees to the horizontal. The block is now pulled up the plane by a rope with a tension of 300N parallel to the plane for 10s. a) What is the acceleration during this period? b) What is its speed at the end of this period? c)...

Homework Statement see attached diagram, one mass is given at 10 kg while the other is unknown. The friction is given an (mu)=0.25 for both masses Homework Equations i need to find Magnitude of M for when the 10KG Mass slides down the plane and again for when the 10KG mass slides up the...

Rotational Motion Find g - Galileo Inclined Plane Homework Statement Galileo measured the acceleration of gravity by rolling a sphere down an inclined plane. Suppose that, starting from rest, a sphere takes 1.6s to roll a distance distance of 3.00 m down a 20 degree inclined plane. What value...

Homework Statement The situation given in the following question doesn't look possible to me. A 1kg block situated on a rough incline is connected to a spring of spring constant 100 N/m. The block is released from rest with the spring in the unstretched position. The block moves 10cm down...

Homework Statement Block B with a mass of (.75kg) is on an inclined plane attatched by a pulley to Block A which has a mass of (1.5kg). The angle given is 40 degrees. The coefficient of friction of Block B on the ramp is .29. What is the acceleration? Homework Equations Fnet=m*a...

It seems to be an easy question but for some reason I can't figure it out. Homework Statement If the 10 lb block A slides down the plane with a constant velocity when θ = 30°, determine the acceleration of the block when θ = 45°. Homework Equations F = ma The Attempt at a...

Homework Statement What is the maximum angle (theta) for which the block of mass m in (figure) will not slide down the incline if the coefficient of static friction is 0.30 and ||P|| = 0? Figure: Homework Equations I know this isn't a hard problem, but I just seem to be stuck on...

Homework help?? [ block on inclined plane ] Homework Statement 002 (part 1 of 3) 10.0 points A 3.86 kg block slides down a smooth, fric- tionless plane having an inclination of 28◦ . The acceleration of gravity is 9.8 m/s2 . Find the acceleration of the block. Answer in units of m/s2...

Homework Statement Consider 4 frictionless slides described by the equations (1) y = sqrt(x), (2) y = x, (3) y = 2x, (4) y = x2. If you start at rest at y = h and slide down to y = 0, which statement regarding your speed v at y = 0 is correct? Homework Equations (1/2)mv2 = KE mgh =...

Hey all. I'm new to this forum and by the looks of it, a lot of you really know your physics. I was hoping for some help on this problem I can't figure out. I think I haven't fully grasped all the concepts involved in this question. Homework Statement Determine the velocity of the 51-lb block...

Homework Statement A small body starts sliding down an inclined plane. The angle between the plane and the horizon is \alpha. The coefficient of friction depends on the distance s that the body travels according to \mu = \beta s. Find the distance that the body travels until coming to a...

A mass M is released from rest on a smooth plane inclined to the horizontal at 14 degrees. Find the time taken for the mass to travel 1m down the incline and the velocit attained at the end of that time. I had no trouble with the first part - measuring the velocity and time for the part where...

Homework Statement I was doing this for fun, but this seemed like the right place to post. Typically inclined plane problems are solved by rotating the coordinate system so the x-axis is along the plane. I decided to try solving the problem without rotating the coordinates. In this case...

Homework Statement "You push a 325-N trunk up a 20.0 degree inclined plane at a constant velocity by exerting a 211-N force parallel to the plane's surface." What force must be exerted on said trunk so that it would slide down the plane with a constant velocity? In which direction should the...

Homework Statement The given diagram is an inclined plane with a 15 degree angle. There are three boxes, A, B, and C all weighing 4 kg. The three packages are touching, but B is in the middle and larger than A and C, which are the same size. The coefficients of friction for A and C are...

Homework Statement so a block of mass m slides on a frictionless surface of an inclined plane of angle theta which itself has mass M and can slide on a horizontal surface. Assuming no friction, find the accel of the block and the inclined plane.. The Attempt at a Solution well...

Homework Statement Person pushing a block with mass m on an inclined plane with angle [theta]. The friction coefficient is u. If the force applied is constant and parallel to the slope of the plane, show that the acceleration ax of the block in the direction of motion can be expressed as ...

Homework Statement A washing machine that weighs 1400N must be put into a delivery truck bed that is 1.2 m off the ground. A worker uses a force of 450N to push the machine up a ramp that is 4.3m long. What is the efficiency of the inclined plane?Homework Equations e=(MA/IMA)100---- efficiency...

I am having problems with a simple problem with a mass (m) stationary on an inclined plane of angle θ. I have obtained the equations for the reaction/normal force and the force acting on the mass parallel to the plane: Reaction force / normal force (R) = mgcosθ Parallel force = mgsinθ...

Homework Statement In the figure below, m1 = 3.8 kg, m2 = 5.5 kg, and the coefficient of kinetic friction between the inclined plane and the 3.8-kg block is μk = 0.26. Find the magnitude of the acceleration of the masses and the tension in the cord...

Homework Statement http://img124.imageshack.us/img124/9997/problem3.jpg Homework Equations f=mgcos theta The Attempt at a Solution I am thinking the answer is f = mgcos theta because gravity only acts on y-component but the answer is f=mgsin theta . Can anyone explain?

Homework Statement A lightweight object and a very heavy object are sliding with equal speeds along a level frictionless surface. They both slide up the same frictionless hill. Which rises to a greater height? A) The heavy object, because it has greater kinetic energy. B) The light...

Homework Statement Block A has mass m = 4.0 kg, and block B has mass m= 2.0 kg. The coefficient of kinetic friction between block B and the horizontal plane is 0.50. The inclined plane is frictionless at the angle 30 degrees and Block A sits on it. The pulley serves only to change the...

Homework Statement A 5-kg block is sliding down an inclined plane. The angle between the incline and the horizontal is 23 degrees. The coefficient of kinetic friction is 0.20. What is the acceleration of the block, in m/s2? Homework Equations The Attempt at a Solution Here's the...

Homework Statement Two blocks are connected over a pulley. The mass of block A is 10 kg, and the coefficient of kinetic friction between A and the incline is 0.20. Angle theta of the incline is 30 degrees. Block A slides down the incline at constant speed. What is the mass of Block B...

Homework Statement A block of mass m = 39 kg is slid over a horizontal frictionless surface at some constant velocity. It then encounters a inclined plane which has a coefficient of kinetic friction of 0.39. The inclination angle for the incline is x = 34.6 degrees and the height of the...

Homework Statement A mass of m = 11 kg is placed on incline plane with friction. A force with a magnitude of F = 59 Newtons is applied downward, perpendicular to the plane at all times. As the angle of the incline is increased from zero degrees it remains static until it reaches an angle of...

Ok so the rpoblem is A 2.20kg box slides down a rough incline plane from a height h of 1.63m. The box had a speed of 2.33m/s at the top and a speed of 1.90m/s at the bottom. Calculate the mechanical energy lost due to friction (as heat, etc.). and I am not sure where to even begin with this...

Homework Statement the weight of a box on a plane inclined at 30 def is represented by the vector W. What is the magnitude of the component of the weight that acts parallel to the incline. Answer is given in terms of W possible anwsers .5W 1.5W .87W and W Homework Equations The...

Homework Statement Plot a displacement-time, velocity-time, and acceleration-time graph for a wheeled cart that rolls down an inclined plane. Already finished the displacement-time graph, but am questioning the correctness of the v-t and a-t graphs. What should they look like? (Like d-t...

Homework Statement A 2.0 kg wood block is launched up a wooden ramp that is inclined at a 30 ^\circ angle. The block's initial speed is 10\;{\rm m}/{\rm s}. The coefficient of kinetic friction of wood on wood is \mu_k=.200. What speed does it have when it slides back down to its starting...

Homework Statement A 4 kg block rests on 37 degrees inclined plane with wheels, held in place by a light rope which is parallel to the plane. The coefficient of static friction is 0.3 and the coefficient of sliding friction is 0.2. The mass of the inclined plane (with wheels) is 16 kg...

Homework Statement A 5 kg object is pushed up along a plane inclined 30 degrees from the horizontal by a force of 20.25 N. If the velocity is 2.0 m/s at the foot of the plane and the coefficient of kinetic friction between the plane and the object is 0.25, how far up the plane will the object...

The block shown in figure below lies on a smooth plane tilted at an angle theta = 23.7o to the horizontal. A) Determine the acceleration of the block as it slides down the plane. Ignore friction. B) If the block starts from rest x = 9.87 m up the plane from its base, what will be the...

Homework Statement A particle is placed on a rough plane inclined at an angle theta, where tan θ = μ = coefficient of friction(both static an dynamic). A string attached to the particle passes through a small hole in the plane. The string is pulled so slowly that you may consider the particle...

I'm trying to follow a very simple example example in a text (Marion/Thornton example 2.1) and I think my rusty calculus is tripping me up and I'm just being stupid. I understand how to derive the acceleration down the plane: \ddot{x}=g\sin\Theta but next they say 'we can find the...

Imagine u have a ball on top of an inclined plane. The ball is released, hence initial velocity is zero. Assume that air resistance and friction between the surface and ball is negligible. using kinematic equations, V2=2as, where a=gsinθ, θ is the angle of inclination of the plane and s is the...

Hi, how would i go about finding/resolving forces on an inclined plane with one mass on top of another? Friction is neglected between the mass and the plane. But you need to find the minimum allowable coefficient of friction between the two blocks. the incline is at 30 degrees block a on...

Hi, When a circular section object (cylinder, sphere of radius r) rolls down an inclined plane (at angle theta) it experiences both linear and angular acceleration due to gravity. I have read multiple times that: mg sin(theta) - friction = m a where friction = Torque/r From there on...

Homework Statement An inclined plane, fixed to the inside of an elevator, makes a 40 angle with the floor. A mass m slides on the plane without friction. What is the acceleration relative to the block if the elevator is a)accelerating upwards .35g b)accelerating downwards .35g? c)constant...