Qstnid -I-4-a Force F Is Applied On A Block Of Mass M. The Block Is Displaced Through A Distance D In The Direction Of The Force. What Is The Work Done By The Force On The Block? Does The Internal Energy Change Because Of This Work? - 26: Laws Of Thermodynamics - Neet-xii-physics

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NEET-XII-Physics

26: Laws of Thermodynamics

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#4
A force F is applied on a block of mass M. The block is displaced through a distance d in the direction of the force. What is the work done by the force on the block? Does the internal energy change because of this work?
Ans : If force F is applied on a block of mass M and displacement of block is d, then work done by the force is given by
W = F.d = Fd cos(0^o) = Fd
This work done does not change the internal energy of the block as the internal energy does not include the energy due to motion or location of the system as a whole.
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