PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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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
3,163364
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 =
kN
2.5 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
1m
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- = 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_forwardThe 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 = 0.5arrow_forwardThe small 0.9-kg block slides with a small amount of friction on the circular path of radius r = 2.5 m in the vertical plane. If the speed of the block is 6 m/s as it passes point A and 4.6 m/s as it passes point B, determine the normal force exerted on the block by the surface at each of these two locations. Assume 0 = 40°. Answers: NA = B NB i i A N Narrow_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_forward3/177 The 1500-kg car has a velocity of 30 km/h up the 10-percent grade when the driver applies more power for 8 s to bring the car up to a speed of 60 km/h. Calculate the time average F of the total force tangent to the road exerted on the tires during the 8 s. Treat the car as a particle and neglect air resistance. Ans. F= 3.03 kN 10 1arrow_forwardThe 4 kg ball is thrown at the suspended 0.35kN block with a velocity of 5 m/s. If the impact is perfectly elastic, what is the value of height "h" to which the block will swing before it comes to rest?arrow_forward
- The 1500-kg car has a velocity of 30 km/h up the 10-percent grade when the driver applies more power for 8 s to bring the car up to a speed of 60 km/h. Calculate the time average F of the total force tangent to the road exerted on the tires during the 8 s. Treat the car as a particle and neglect air resistance.arrow_forwardThe 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.arrow_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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