Khufra works at a spring factory and he was assigned to test a certain spring, whose constant is 50 N/m, attached to a 30-kg block in an incline (θ=30°). With the spring initially at equilibrium position, the block was pulled 0.5 meters down the incline by a 50-N external force applied parallel to the path.The coefficient of kinetic friction is 0.5. 1) How much work is done by the spring (in Joules) on the block? 2) How much work is done by the block (in Joules) on the spring? 3) How much work is done by the applied pull on the block? 4) How much work is done by friction?

Khufra works at a spring factory and he was assigned to test a certain spring, whose constant is 50 N/m, attached to a 30-kg block in an incline (θ=30°). With the spring initially at equilibrium position, the block was pulled 0.5 meters down the incline by a 50-N external force applied parallel to the path.The coefficient of kinetic friction is 0.5. 1) How much work is done by the spring (in Joules) on the block? 2) How much work is done by the block (in Joules) on the spring? 3) How much work is done by the applied pull on the block? 4) How much work is done by friction?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter2: Vectors

Section: Chapter Questions

Problem 21CQ: What is wrong with the following expressions? How can you correct them? (a) C=AB , (b) C=AB , (c)...

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