The 0.5-lb ball is shot from the spring device shown. The spring has a stiffness k = 10 lb/in. and the four cords C and plate P keep the spring compressed 2 in. when no load is on the plate. The plate is pushed back 3 in. from its initial position. If it is then released from rest, determine the speed of the ball when it travels 30 in. up the smooth plane.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Solve using PRINIPLE OF WORK AND ENERGY (not principle of conservation of energy). Solution is v= 32.3 ft/s but I would appreciate seeing detailed steps. Thank you.

14-74.
The 0.5-1b ball is shot from the spring device shown. The
spring has a stiffness k = 10 lb/in. and the four cords C and
plate P keep the spring compressed 2 in. when no load is on
the plate. The plate is pushed back 3 in. from its initial
position. If it is then released from rest, determine the speed
of the ball when it travels 30 in. up the smooth plane.
30°
Transcribed Image Text:14-74. The 0.5-1b ball is shot from the spring device shown. The spring has a stiffness k = 10 lb/in. and the four cords C and plate P keep the spring compressed 2 in. when no load is on the plate. The plate is pushed back 3 in. from its initial position. If it is then released from rest, determine the speed of the ball when it travels 30 in. up the smooth plane. 30°
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