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Point object of mass 2kg is moved from point a to point B very slowly on a curved path by applying a tangential force on a curved path as shown in the figure then find the work done by external force is moving the body given us equal to 0.3 and beauty courses 0.1

Answer»

400 J Explanation:1) Since, POINT object is moved  very slowly from A to B .=> KINETIC energy is 0 at point A and B.Since, A and B are at same height from ground.Work done by Gravity = 0 2) Work done by FRICTION l= 200 mLet the work done by tangential force be .3) Now, By Applying Work Energy Theorem ,Hence, Work done by tangential force is 400 J.



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