PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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The 10-lb collar B is at rest, and when it is in the position shown the spring is unstretched. If another 1-lb collar A strikes it so that B slides 4 ft on the smooth rod before momentarily stopping, determine the velocity of A just after impact, and the average force exerted between A and B during the impact if the impact occurs in 0.002 s. The coefficient of restitution between A and B is e = 0.5
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The 50-kg block at A is mounted on rollers so that it moves along the fixed horizontal rail with negligible friction under the action of the constant 300-N force in the cable. The block is released from rest at A, with the spring to which it is attached extended an initial amount x1 = 0.233 m. The spring has a stiffness k = 80 N/m. Calculate the velocity v of the block as it reaches position B.
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- The pile P has a mass of 800 kg and is being driven into loose sand using the 300-kg hammer C which is dropped a distance of 0.5 m from the top of the pile. Determine the distance the pile is driven into the sand after one blow if the sand offers a frictional resistance against the pile of 18 kN. The coefficient of restitution between the hammer and the pile is e-0.1. Neglect the impulses due to the weights of the pile and hammer and the impulse due to the sand during the impact. 0.5m Copyrig 3,163364arrow_forwardBlock A has a mass of 2 kg and slides into an OPEN-ENDED box B with a velocity of 2 m/s. If the boxB has a mass of 3 kg and rests on top of a plate P that has a mass of 3 kg, determine the distancethe plate moves after it stops sliding on the floor. Also how long in seconds is it after impact before allmotion ceases? The coefficient of kinetic friction between the box and the plate is μk=0.2, andbetween the plate and the floor μ'k=0.2. Also, the coefficient of static friction between the plateand the floor is μ's = 0.5arrow_forward= Block A has a mass of 3 kg and is sliding on a rough horizontal surface with a velocity (VA)1 2.0 m/s when it makes a direct collision with block B, which has a mass of 2 kg and is originally at rest. If the collision is perfectly elastic (e = 1), determine the distance between the blocks when they stop sliding. The coefficient of kinetic friction between the blocks and the plane is μ = 0.20. Give your answer in metres (m) with three decimal places of precision. (VA)1 A B No new data to save. Last checked at 14:51 Submit quizarrow_forward
- The 20-g bullet is traveling at 400 m/s when it becomes embedded in the 2-kg stationary block. Determine the distance the block will slide before it stops. The coefficient of kinetic friction between the block and the plane is Hk = 0.2. 400 m/sarrow_forward1arrow_forwardBlock A has a mass of 2 kg and slides into an open ended box B with a velocity of 2 m/s. If the boxB has a mass of 3 kg and rests on top of a plate P that has a mass of 3 kg, determine the distancethe plate moves after it stops sliding on the floor. Also, how long is it after impact before allmotion ceases? The coefficient of kinetic friction between the box and the plate is μk=0.2, andbetween the plate and the floor μ'k=0.2. Also, the coefficient of static friction between the plateand the floor is μ's = 0.5arrow_forward
- The 20-g bullet is traveling at 400 m/s when it becomes embedded in the 2-kg stationary block. Determine the distance the block will slide before it stops. The coefficient of kinetic friction between the block and the plane is lk = 0.2. 400 m/sarrow_forward2.5 m/s 4. The 12-kg package A has a speed of 2.5 m/s when it enters the smooth ramp. As it slides down the ramp, it strikes the 34-kg package B which is initially at rest. If the coefficient of restitution between A and B is = 0.65, determine the velocity of Bjust after the impact. 2m 1marrow_forwardThe spring has a stiffness k = 50 lb/ft and an unstretched length of 2 ft. As shown, it is confined by the plate and wall using cables so that its length is 1.5 ft. A 5-lb block is given a speed A when it is at A, and it slides down the incline having a coefficient of kinetic friction µ = 0.2. It strikes the plate and pushes it forward 0.25 ft before stopping. Neglect the mass of the plate and spring. (Figure 1), Figure k = 50 lb/ft 1.5 ft 3 ftarrow_forward
- The 1440-kg car has a velocity of 26 km/h up the 7-percent grade when the driver applies more power for 10 s to bring the car up to a speed of 64 km/h. Calculate the time average F of the total force tangent to the road exerted on the tires during the 10 s. Treat the car as a particle and neglect air resistance. 1 7 100 Answer: F = kNarrow_forwardThe 1-1b ball A is thrown so that when it strikes the 10-1b block B it is traveling horizontally at v = 30 ft/s as shown in (Figure 1). Figure A B 1 of 1 Part A If the coefficient of restitution between A and B is e = 0.6, and the coefficent of kinetic friction between the plane and the block is μ = 0.4, determine the distance block B slides on the plane before stopping. Express your answer in feet to three significant figures. VE ΑΣΦ ↓↑ vec S = Submit Previous Answers Request Answer ? ftarrow_forward4. The 12-kg package A has a speed of 2.5 m/s when it enters the smooth ramp. As it slides down the ramp, it strikes the 34-kg package B which is initially at rest. If the coefficient of restitution between A and Bis = 0.65, determine the velocity of B just after the impact.arrow_forward
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