Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 7, Problem 42P
To determine
The length of the track.
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Chapter 7 Solutions
Physics Fundamentals
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- A 5.0-kg box rests on a horizontal surface. The coefficient of kinetic friction between the box and surface is K=0.50 . A horizontal force pulls the box at constant velocity for 10 cm. Find the work done by (a) the applied horizontal force, (b) the frictional force, and (c) the net force.arrow_forwardi Review I Constants You are a member of an alpine rescue team and must get a box of supplies, with mass 3.00 kg , up an incline of constant slope angle 30.0 ° so that it reaches a stranded skier who is Part A a vertical distance 2.90 m above the bottom of the incline. There is some friction present; the kinetic coefficient of friction is 6.00x10-2. Since you can't walk up the incline, you give the box a push that gives it an initial velocity; then the box slides up the incline, slowing down under the forces of friction and gravity. Take acceleration due to gravity to be 9.81 m/s? Use the work-energy theorem to calculate the minimum speed v that you must give the box at the bottom of the incline so that it will reach the skier. Express your answer numerically, in meters per second. • View Available Hint(s) ΠνΠ ΑΣφ v = 5.60 m/s Submit Previous Answersarrow_forwardAnswer A and B for question 2 2. An object was a mass of 10.0 kg is at rest at the top of a frictionless inclined plane of length 8.00 m and an angle of inclination 30.0° with the horizontal. The object is released from this position and it stops at a distance d from the bottom of the inclined plane along a horizontal surface, as shown in Fig. 8-6. The coefficient of kinetic friction for the horizontal surface of 0.400. (a) What is the speed of the object at the bottom of the inclined plane? (b) At what horizontal distance from the bottom of the inclined plane will this object stop?arrow_forward
- An experiment is conducted where a metal ramp is placed on a level surface, with the ramp’s surface at 37 degrees to the horizontal. A 1.00kg block is placed 3.00m above the surface initially at rest and allowed to slide down to the bottom. The velocity at the bottom of the ramp is found to be 5.62m/s. Estimate the coefficient of kinetic friction for the ramparrow_forwardA 3 kg block travels along a horizontal surface with a coefficient of kinetic friction of 0.28 at a speed of 7 m/s. After sliding a distance of 1.4 m the block makes a smooth transition to a ramp with a coefficient of kinetic friction of 0.28. How far up the ramp does the block travelled before coming to a momentary stop.arrow_forwardA person is sitting on a toboggan at the top of 23.7 m hill. If the person and toboggan have a total mass of 37.3 kg, determine how fast they will be going when they reach the bottom of the hill. Assume there is no friction.arrow_forward
- A skater starts from rest at the top of a frictionless hill that is inclined at 12⁰ with the horizontal. The hillside is 80.0 m long and the coefficient of friction between the snow and the skis is 0.125. At the bottom of the hill, the snow is level and the coefficient of friction is unchanged. Calculate the distance the skater slides along the horizontal portion of the snow before coming to rest.arrow_forwardA tire moving with initial velocity moves up an incline and begins to slow down but hasn't stopped Which direction is friction Clockwise Vo O Clockwise O Counterclockwisearrow_forwardA 4.0 kg block starts with a speed of 15 m/s at the bottom of a plane inclined at 33° to the horizontal. The coefficient of sliding friction between the block and plane is ?k = 0.22.arrow_forward
- If you have an object moving along a rough surface (one in which kinetic friction is a significant contributor) then kinetic energy will be conserved. True Falsearrow_forwardA box with a mass of 7.24 kg is held at the top of frictionless inclined plane of length L = 10.9 m and an inclination angle 0 = 26.9 degrees above the horizontal. The box is released from rest and stops at a distanced = 22.62 m from the bottom of the inclined plane along the rough horizontal surface. What is the coefficient of kinetic friction between the box and the rough horizontal surface?arrow_forwardUse the friction t=p+6 to find the value of t when p=4.arrow_forward
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