EBK ENGINEERING MECHANICS
15th Edition
ISBN: 9780137569830
Author: HIBBELER
Publisher: VST
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Chapter 14, Problem 24P
At a given instant the 10-lb block A is moving downward with a speed of 6 ft/s. Determine its speed 2 s later. Block B has a weight of 4 lb. and the coefficient of kinetic friction between it and the horizontal plane is μk = 0.2. Neglect the mass of the cord and pulleys.
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Chapter 14 Solutions
EBK ENGINEERING MECHANICS
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- The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a) Determine the force P required to pull the roller at a constant speed. (b) What force P would be needed to push the roller at a constant speed?arrow_forwardDetermine the velocity of the 68.3-lb block A if both blocks are released from rest and the 26.2-lb block B moves 3.9 ft up the incline. The coefficient of friction between the plane and the blocks is us = 0.1.arrow_forwardThe small 2-kg block A slides down the curved path and passes the lowest point B with a speed of 4 m/s. If the radius of curvature of the path at B is 1.5 m, and the coefficient of friction between the block and path is 0.3, determine (a) the normal force exerted on the block by the path at B, and (b) the rate of change of speed at this point.arrow_forward
- The 18-kg block A slides on the surface for which μk = 0.3. The block has a velocity v = 10 m/s when it is s = 4 m from the 11-kg block B. The unstretched spring has a stiffness k = 1200 N/m . Take e = 0.6. The coefficient of friction is the same for both blocks.arrow_forwardThe 10-lb block has a speed of 4 ft/s when the force of F = (8t2) lb is applied. Determine the velocity of the block when t = 2 s. The coefficient of kinetic friction at the surface is mk = 0.2.arrow_forwardThe 8-kg block is moving with an initial speed of 5 m/s. If the coefficient of kinetic friction between the block and plane is μk=0.25, determine the compression in the spring when the block momentarily stops.arrow_forward
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- 2. The 10-Ib block has a speed of 4 ft's when the force of F= (8t?) Ib is applied. Determine the velocity of the block when t= 2 s. The coefficient of kinetic friction at the surface is = 0.2. v = 4 ft/s F= (8°) lbarrow_forwardThe 100 kg crate is subjected to forces F1= 800 N and F2= 1500 kN, as shown. If it is originally at rest, determine the distance it slides in order to attain a speed of v= 6 m/s. The coefficient of kinetic friction between the crate and the surface is Muk= 0.2arrow_forwardWhen s = 55 cm, the spring is unstretched and the 9-kg block has a speed of 6.19 m/s down the smooth plane. If the coefficient of kinetic friction between the surface and the block is 0.25, find the distance (mm) s at which the block stops. k = 208 N/m 6.19 m/s F = 118 N 30arrow_forward
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