a body of mass m is moving
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work done = force × displacement
according to the question,
force acting on the body = mv*v/r
displacement = half of circumference= 22/7*r
work done = m*v*v/r*22/7*r
hence option (a) is correct.
according to the question,
force acting on the body = mv*v/r
displacement = half of circumference= 22/7*r
work done = m*v*v/r*22/7*r
hence option (a) is correct.
gourav6973:
its wrong
No , its correct. Are u hving the correct answer...according to my opinion , answer should be this only. If in case , u find it incorrect , then u may ask somebody else to solve it.
its answer is zero
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