The small collar of mass m-0.56 kg is released from rest at A and slides down the curved rod in the vertical plane with negligible friction. If b-0.46 m, and h-2.97 m, and if the velocity of the collar as it strikes the base B is 6.11 m/s after release of the collar from rest at A, calculate the work Q of friction. What happens to the energy which is lost?

The small collar of mass m-0.56 kg is released from rest at A and slides down the curved rod in the vertical plane with negligible friction. If b-0.46 m, and h-2.97 m, and if the velocity of the collar as it strikes the base B is 6.11 m/s after release of the collar from rest at A, calculate the work Q of friction. What happens to the energy which is lost?

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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You have to build a box lifter, this will be made with a square threaded power screw. The power screw is 3 inches in diameter and 2 threads per inch. To improve the speed of raising and lowering the boxes, it must be with triple thread. The coefficient of friction of the screw and collar is 0.25, the diameter of the collar is 4 inches.Calculate:1. The depth of the thread, the width of the face, the average diameter, the root diameter, the pitch and its feed.2. The torque to increase the load and the efficiency of the screw.3. The speed of the motor (in rpm), if it is directly coupled to the screw and it is desired that the boxes rise at a speed of 30 inches/min.
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