Questions
A particle of mass 0.1 kg is subjected to a force which varies with distance as shown in fig. If it starts its journey from rest at , its velocity at is
detailed solution
Correct option is D
Area between curve and displacement axis = 12×(12+4)×10 = 80 JIn this time body acquire kinetic energy = 12mv2by the law of conservation of energy 12mv2=80J⇒12×0.1×v2=80 ⇒ v2 = 1600 ⇒ v = 40 m/sTalk to our academic expert!
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The force required to stretch a spring varies with the distance as shown in the figure. If the experiment is performed with the above spring of half length, the line OA will
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