Questions
The kinetic energy acquired by a mass m in traveling a certain distance d, staring from rest, under the action of a constant force is directly proportional to
detailed solution
Correct option is B
K.E. =12mv2 Further, v2=u2+2as or v2=0+2ad v2=2(F/m)d Substituting the value of v2 from eq. (2) in eq. (1), we get K.E. =12m×2(F/m)d=Fd K.E. ∝d (independent of mass)Talk 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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