Questions
A particle of mass 0. 1 kg is subjected to a force which varies with distance as shown in the figure. If it starts its journey from rest at x = 0, its velocity at x = 12 m is
detailed solution
Correct option is D
Area between curve and displacement axis= 12×(12+4)×10 = 80 JIn this time the body acquires kinetic energy= 12mv2 by the law of conservation of energy12mv2 = 80 J⇒12×0.1×v2 = 80⇒v2 = 1600⇒ v =40 m/sTalk to our academic expert!
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The curved portions are smooth and horizontal surface is rough. The block is released from P. At what distance from A, it will stop (if = 0.8)?
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