Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 5, Problem 27P
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Determine the tension in each chain when the chains are vertical and also, girl’s speed is 3.00 m/s.
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Physics Fundamentals
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- A 1520-N crate is to be held in place on a ramp that rises at 30.0° above the horizontal (see figure). The massless rope attached to the crate makes a 22.0° angle above the surface of the ramp. The coefficients of friction between the crate and the surface of the ramp are uk = 0.450 and us = 0.650. The pulley has no appreciable mass or friction. What is the MAXIMUM weight w that can be used to hold this crate stationary on the ramp? w = ? Crate 22.0 Ramp 30,0arrow_forwardA 39.0-kg child swings in a swing supported by two chains, each 2.92 m long. The tension in each chain at the lowest point is 428 N. (a) Find the child's speed at the lowest point. 7.59 Consider all the vertical components of force acting on the swing when it is at its lowest point and relate them to the acceleration of the swing at that instant. m/s (b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.) 1238.59 Consider what exerts the force referred to in the question and how that is related to the various forces acting on the child. N (upward)arrow_forwarda person is pushing a 50 kg block across the ground at a constant speed of 10m/s with a force of 100 N, using a lever inclined angle of 20 degrees. What is the normal force on the box?arrow_forward
- 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 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/s² . 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.arrow_forwardA 5.00 kg box sits at rest at the bottom of a ramp that is 8.00 m long and is inclined at 30.0 above the horizontal. The coefficient of kinetic friction is mk = 0.40, and the coefficient of static friction is ms = 0.43. What constant force F, applied parallel to the surface of the ramp, is required to push the box to the top of the ramp in a time of 6.00 s?arrow_forwardA box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.25 and the push imparts an initial speed of 3.9 m/sm/s ?arrow_forward
- A constant applied force F, of 11.0 N pushes a box with a mass m = 8.00 kg a distance x = 15.0 m across a level floor. The coefficient of kinetic friction between the box and the floor is 0.110.arrow_forwardYou are a member of an alpine rescue team and must get a box of supplies, with mass 2.10 kg, up an incline of constant slope angle 30.0° so that it reaches a stranded skier who is a vertical distance 2.90 m above the bottom of the incline. There is some friction present; the kinetic coefficient of friction is 6.00×10-2. 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/s². Part A Use the work-energy theorem to calculate the minimum speed that you must give the box at the bottom of the incline so that it will reach the Express your answer numerically, in meters per second. ► View Available Hint(s) V= ΕΠΙΑΣΦΑ A20 ^ ? m/sarrow_forwardYou 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 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-eneray 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.arrow_forward
- A 5.35kg block is pulled across a floor by a 23.71 N force. The coefficients of static and kinetic friction are 0.4 and 0.2. What is the speed of the block after 1.95 m?arrow_forwardA 37.0-kg child swings in a swing supported by two chains,each 2.96 m long. The tension in each chain at the lowestpoint is 418 N. Find (a) the child’s speed at the lowest pointand (b) the force exerted by the seat on the child at the lowestpoint. (Ignore the mass of the seat.)arrow_forwardA heavy crate is suspended from two ropes as it is lowered from a high shelf to the floor at a constant speed. One of the ropes makes an angle of 28.2 degrees with respect to the vertical and has a tension of 950 N, while the other makes an angle of 33.7 with respect to the vertical. What is the crate's mass in kg?arrow_forward
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