426. A 20-1lb block B is suspended from a 5-ft cord attached to a 50-lb cart A hich can move freely down the incline. Determine for the instant the system is peleased from rest (a) the acceleration of the cart, (b) the acceleration of the block, 50 lb (c) the tension in the cord. 12 7* A car climbs the hill AB at a constant speed as shown. If the driver does not change the throttle setting or shift gears, determine the magnitude of the acceleration of the car immediately after entering (a) the level section BC, (b) the downhill sec- 20 lb tion CD.

426. A 20-1lb block B is suspended from a 5-ft cord attached to a 50-lb cart A hich can move freely down the incline. Determine for the instant the system is peleased from rest (a) the acceleration of the cart, (b) the acceleration of the block, 50 lb (c) the tension in the cord. 12 7* A car climbs the hill AB at a constant speed as shown. If the driver does not change the throttle setting or shift gears, determine the magnitude of the acceleration of the car immediately after entering (a) the level section BC, (b) the downhill sec- 20 lb tion CD.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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SHOW COMPLETE SOLUTION A spring is used to stop 50kg block moving down a 20 degrees inclined plane. The spring has a constant K= 30KN/M and is held by the cables so that it is initially compressed 50mm. Knowing that the velocity of the package is 2m/s when it is 8m from the spring and assuming the kinetic coefficient of friction between the package and the incline is 0.20. Determine: D. Final total potential energy E. Initial kinetic energy F. Initial total potential energy
Solve Prob. 13.26, assuming that the 2-kg block is attached to the spring.Reference to Problem 13.26:A 3-kg block rests on top of a 2-kg block supported by, but not attached to, a spring of constant 40 N/m. The upper block is suddenly removed. Determine (a) the maximum speed reached by the 2-kg block, (b) the maximum height reached by the 2-kg block.
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