Inclined plane Definition and 822 Threads

Hi, I'm facing a pretty silly problem and I will appreciate if you can help me. I face the following diagram: http://img808.imageshack.us/img808/6273/inclinedplane.jpg Forget about the all the missing values in the painting(like that cart's mass, the value of θ, etc..) they are...

can i say normal force acting on the object perpendicular to the surface is the frictional force?? because if the normal force is great enough, the object will not slide down...so, can i say frictional force is normal force? help me...thank you

Homework Statement (Irodov - Problems in General Physics - 1-31) A ball starts falling with zero initial velocity on a smooth inclined plane forming an angle α with the horizontal. Having fallen the distance h, the ball rebounds elastically off the inclined plane. At what distance from the...

So, this particular plane is angled so that a certain object will roll at a constant acceleration of 2 m/s each second. The object's initial velocity will be zero and in one second its velocity will be 2 m/s, but will only have traveled 1 m during that duration between zero and one seconds. Is...

Ice block on inclined plane-- easy problem! I'm pretty sure I did this correctly, but my answers are different from those given in the back of the book (which our TA warned us were frequently incorrect), so I thought I'd ask you guys if I made any obvious mistakes. Homework Statement A...

For my classes I want to prepare this experiment http://fizyczny.net/viewtopic.php?t=28422 But of course I need to collect some data and explain why is it so. I thought about gravity and torque and that ball inside works as lever arm. Do you have any ideas?

Homework Statement Homework Equations All the usually relevant circular motion equations involving θ, I, ⍺, τ and ω The Attempt at a Solution I've tried to work from the energy of the cylinder (Using Ek = Ktrans + Krot) and equating the energy to its potential energy at the...

Hi, I have a terrible time when solving Inclined Plane problems when it comes to dividing the weight component into two. I can't see why, to find the perpendicular component I do the cos Theta of the weight and the parallel component I do the sin Theta of the weight. Can anyone, (maybe on...

Hello everyone. I think I have almost understood the third one of Newton's motion laws but I have some doubts: Let us think an inclined plane block located on a surface, there is a box on it and assume there is no friction neither between the surface and block nor between the block and the box...

http://imageshack.us/photo/my-images/194/inclinedplane.png/ 1.Homework Statement The block is released from rest with the spring in the unstretched position. The block moves 10 cm down the incline before coming to rest. Find the coefficient of friction between the block and the incline...

Homework Statement The cylinder is being pulled up the plane by a block. I've found that it IS rolling without slipping, and the acceleration is 5.00156 m/s^2. Homework Equations a=R[alpha] The Attempt at a Solution I've heard that the angular acceleration is the linear...

This isn't really a numerical question, just a conceptual questoin. I wanted to know why if you have an object rolling down an inclined plane, you can just choose to put the pivot point anywhere. This is because I see problems where one thing is solved using F*R=I\alpha And I also see when...

Homework Statement A 5kg block slides down an inclined plane at constant velocity. If the angle of inclination is 22 degrees, find the coefficient of friction. Homework Equations F=ma trig The Attempt at a Solution I'm only able to find the normal force, i suppose i could also use...

Homework Statement A cylinder, with a rope wrapped around it, is placed on top of an inclined plane.If the speed of the cylinder in the bottom of the plane, when the angle of the plane is 30 degrees, is 1m/s, find what speed will the cylinder have when it is placed on a plane with an angle of...

Homework Statement He gives the bike a little throttle providing an applied force of 1.20 kN to propel him up the 25 degree incline. THe combined weight of Chad and the dirt bike is 1.85 kN. If the force of friction is 250 N, determine the acceleration? [b]2. Homework Equations [/b I...

The angle of the slope is 4.8 with the horizontal and the weight of the lorry is 2.4 x 105. A resistive force of 1.2 x 104 down the slope acts on the lorry as it travels up the slope at a constant speed of 15 m/s (a) Show that the component of the weight of the lorry down the slope is 2.0 x...

A block is held stationary on a frictionless inclined plane by means of a string. The angle of inclination of the plane is 25 degrees, the block has mass 2.6 kg. Calculate the force on the string, you may assume that g = 9.8 m/s2 . Sorry for the poor quality of the attachment but I think you...

Homework Statement Im completely stuck! I'm trying to find the acceleration of a block on an inclined plane. Knowing only angle of the the slope and the kinetic friction coefficiant. theta = 30 mu = 0.8 find acceleration Homework Equations F = ma Ff = mu N = mu W cos theta...

Homework Statement Why there won't be any friction?

Hi guys, I need to model a ball rolling on an incline plane, and i would like to be able to calculate acceleration due to gravity for a given angle. Currently i have: a = f / m f = m*g*sin(angle) a = g*sin(angle) I am aware this does not take rotational motion into account, which is what...

Homework Statement Three blocks are connected by two different strings over two pulleys. Assume no friction between the pulleys and the rope segments. Green mass = 13 kg Red mass = 18 kg Blue mass = 23 kg The coefficient of friction between the masses and the surface is 0.20. Find the...

Homework Statement A block of mass 1.60 kg is pulled up a rough 30 degree incline at constant speed by a string parallel to the surface. The friction force on the block is 7.00 N. The incline is 4.00 m long and 2.00 m high. (1) How much gravitational potential energy did the block gain...

Hey Everyone, here's a question i have issue with :( A particle of mass 0.5 kg is pushed up a line af a greatest slope of a rough plane by a horizontal force of magnitude ℙ N. The plane is inclined at an angle 'α' (that is alpha) where tan α = 0.75 and the coefficient of friction between 'ℙ'...

Homework Statement A block weighing 87.5 N rests on a plane inclined at 25.0o to the horizontal. A force is applied to the object at 50.0o to the horizontal, pushing it upward on the plane. The coefficients of static and kinetic friction between the block and the plane are, respectively...

When a ball rolls down an inclined plane , it gains speed because of gravity .When rolling up an inclined plane, it loses speed because of gravity .Why doesn't gravity play a role when it rolls on a horizontal surface ?

Well, it's my second post about rigid body. I originally posted this on introductory physics, but as nobody answered this, or the previous topic, I've decided to post this here. Homework Statement I have this other exercise rigid in the plane, with which I am having problems. The rod of...

Homework Statement I have this other exercise rigid in the plane, with which I am having problems. The rod of mass m and length l, is released based on the vertical position of rest with the small roller end A resting on the slope. Determine the initial acceleration A. (neglect friction and...

1. Homework Statement [/b] A block of weight mg sits on an inclined plane as shown. A force of magnitude F is applied to pull the block up the incline at constant speed. The coefficient of kinetic friction between the plane and the block is Mu. What is the total work done on the block by the...

Homework Statement A frictionless pulley connects 2 masses, one of which is on a frictionless inclined plane at angle θ, as shown in the diagram. The pulley system is set up so it has a mechanical advantage of 2 (so that if m1 moves 1 meter, m2 will move only 0.5 meters). Find equations...

Homework Statement A block with mass 10.7 kg is placed on an inclined plane with slope angle 24^\circ and is connected to a second hanging block that has mass 15 kg by a cord passing over a small, frictionless pulley. The coefficient of static friction is 0.47 and the coefficient of kinetic...

Homework Statement A student is skateboarding down a ramp that is 6.2 m long and inclined at 13° with respect to the horizontal. The initial speed of the skateboarder at the top of the ramp is 2.1 m/s. Neglect friction and find the speed at the bottom of the ramp. Homework Equations F =...

Homework Statement A 42 kg block of ice slides down a plane with an angle of 30 degrees. Assuming friction is negligible, what is the acceleration of the block down the incline Homework Equations F=ma The Attempt at a Solution I have drawn the right free body diagram. I just...

Homework Statement What is the magnitude of the acceleration of the system, and what is the tension on the string. The setup is there is 2 masses m1 and m2 which are connected by a string. One is on top of a flat horizontal plane, while the other is on an inclined plane with angle 40...

Homework Statement Block A starts from rest and slides 8m down a frictionless 30 degree angled inclined plane. It then crosses a 4m horizontal surface where the coefficient of kinetic friction is 0.2. What is the velocity of Block A after it has finished crossing the horizontal surface...

I've been thinking about this for a model I'm devising. Assuming that you have an object of mass m, height h, coefficient of friction u, how large can you make the angle between the ground and the inclined plane. Otherwise, at what angle does the torque from the center of mass of the object...

URGENT physics find angle of inclined plane! help!? Homework Statement A block slides down an inclined plane at a constant velocity of 0.14m/s. The coefficient of kinetic friction is 0.45. What is the angle of inclination? Homework Equations Fnetx = Fk -mgsintheta Fnety = FN...

Homework Statement I'm having a lot of trouble figuring this one out: I attached a figure which shows what's going on, for clarification. Homework Equations The relation between absolute and relative velocities is as follows: U = u - OMEGA*y V = v + OMEGA*x where U and V are...

Homework Statement A man is pushing a box on top of a plane that is inclined 20 degrees above the horizontal, with a distance of 10 m. The weight of the box is 20 kg and the coefficient of kinetic friction is 0.30. The velocity is constant. How much force is exerted by the man? Find the work...

Homework Statement A box sits on an inclined plane. Given its mass and the angle of the incline, what is the magnitude of the normal force? Homework Equations I don't know- my understanding is N=mgcos(theta), but my physics textbook says otherwise... The Attempt at a Solution My attempt at...

A train moving up an incline at 4 degrees has it's last train compartment detached. The train was moving at a speed of 5 m/s when the compartment breaks free. How far did the train get before the speed momentarily reaches zero? No other information is given, but using all that was provided, I...

Homework Statement The weight of a book sliding down a frictionless inclined plane can be broken into two vector components: one acting parallel to the plane, and the other acting perpendicular to the plane. (a) At what angle is the components equal? (b) At what angle is the component...

Homework Statement Use the polygon of forces to demonstrate that the crate is in equilibrium on the slope Homework Equations No friction 1962 N crate sitting on a inclined plane 25 degree angle. The Attempt at a Solution I have drawn four forces mg = 1962 N ( 200 kg * 9.81)...

Homework Statement There is inclined, smooth plane whish is sloped with angle 30 degrees. Some objects moves on it. The attraction power is 17 Newtons. Find the force which gives acceleration for the body. Homework Equations F = m×a; F_attraction = m×g; L = 30⁰; F_friction = u×N...

Homework Statement two blocks of mass m1 50kg and m2 100kg are connected by a string of negligible mass. The pulley is massless and frictionless. The coefficient of kinetic friction between the 50kg block and the incline is 0.250 the 100kg mass is the hanging mass. theta is 37.0 deg...

Homework Statement Consider a small box mass m initially at the bottom of an inclined plane mass M, length L with angle of inclination of \theta. The surface between the plane and the block and the plane and the horizontal are both frictionless. A force F is applied horizontally to the small...

Homework Statement A ball is rolling off an inclined plane. After 1 second the ball has traveled 10cm. How far will it travel in 3 seconds?Homework Equations v = l/t v = v0t + at x = x0 + v0t + at2/2 The Attempt at a Solution v = l/t1 v = v0t + at (there's no starting velocity, so) l/t1 =...

Homework Statement [PLAIN]http://img192.imageshack.us/img192/8160/3233q.jpg Need to show the gravitational acceleration: g = g_{0}sin(\theta)\hat{x}-g_{0}cos(\theta)\hat{y} where g_{0}=9.81ms^{-2}. (note that the g, x and y, should all have underbar notations). Homework...

What force does work on a ball as it is rotating down an inclined plane? Explain why the other forces the ball experiences do not do work. I think the ball experiences gravitational, normal, and frictional forces. Is the force that actually does work on the ball just gravity? I'm having a...

Homework Statement A block with mass 5 kg slides down and inclined plane with height 1.5 m and coefficient of kinetic friction .35. The final speed of the block is 4.2 m/s. Find the angle of the inclined plane.Homework Equations {W^{{\rm{net}}}} = {W^{{\rm{grav}}}} - {W^{{\rm{fric}}}} = {K_2}...

Hello all... Help... :confused: my teacher gave us this question and... no matter how I approach this question, I just can't solve it... The question asks... an ice block melts and slides down a plane of rough surface.. The mass of the ice block starts at 3 kg, and its mass...