A man is supplying a constant power of 500`(J)/(s)` to a massless string by pulling it at a constant speed of `10(m)/(s)` an shown. It is known that kinetic energy of the block is increasing at a rate of `100(J)/(s)`. Then the mass of the block is:\

Rajan exerts a force of 150 N in pulling a cart at a constant speed of 10 m s^(-1) .Calculate the power exerted.

A block of mass M is hanging over a smooth and light pulley by a constant force F . The kinetic energy of the block increases by 20 J in 1 s.

A man exerts a force of 200N in pulling a cart at a constant speed of 16m//s Calculate the power spent by the man.

A block of mass 2 kg is connect to an ideal spring and the system is placed on a smooth horizontal surface. The spring is pulled to move the block and at an instant the speed of end A of the spring and speed of the block were measured to be 6 m/s and 3 m/s respectively. At this moment the potential energy stored in the spring is increasing at a rate of 15 J/s. Find the acceleration of the block at this instant.

A block of mass 2 kg is connected to an ideal spring and is placed on a smooth horizontal surface. The spring is pulled to move the block and at an instant, the speed of end A of the spring and speed of the block were measured to be 6 m/s and 3 m/s, respectively. At this moment the potential energy stored in the spring in increasing at a rate 15 J/s. Find the acceleration of the block at this instant.

In a horizontal spring-block system force constant of spring is k = 16N/m, mass of the block is 1 kg. Maximum kinetic energy of the block is 8J. Then

In a horizontal spring-block system force constant of spring is k = 16N/m, mass of the block is 1 kg. Maximum kinetic energy of the block is 8J. Then

A block of mass m is connected to another .block of mass M by a massless spring of spring constant k. A constant force f starts action as shown in figure, then:

A block of mass m is connected to another .block of mass M by a massless spring of spring constant k. A constant force f starts action as shown in figure, then:

A 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 20 J in 1 s:-