ntA block of mass M is hanging over a smooth and light pulley through a light string. The other end of the string is pulled by a constant force F. The kinetic energy of the block increases by 20J in 1 sec.n ntA)tension in the string is Mg.n ntB) tension in the string is Fn ntC)the work done by the tension the block is 20J in the above 1 sec.n ntD) the work done by the force of gravity is -20J in the above 1 secn

ntA block of mass M is hanging over a smooth and light pulley through

1.	ntA block of mass M is hanging over a smooth and light pulley through a light string. The other end of the string is pulled by a constant force F. The kinetic energy of the block increases by 20J in 1 sec.n ntA)tension in the string is Mg.n ntB) tension in the string is Fn ntC)the work done by the tension the block is 20J in the above 1 sec.n ntD) the work done by the force of gravity is -20J in the above 1 secn
Answer» ntA block of mass M is hanging over a smooth and light pulley through a light string. The other end of the string is pulled by a constant force F. The kinetic energy of the block increases by 20J in 1 sec.n ntA)tension in the string is Mg.n ntB) tension in the string is Fn ntC)the work done by the tension the block is 20J in the above 1 sec.n ntD) the work done by the force of gravity is -20J in the above 1 secn

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