A block of mass M is kept on a platform which is accelerated upward with a constant acceleration 'a' during the time interval T. The work done by normal reaction between the block and platform is

A block of mass M is kept on a platform which starts accelerating upwards from rest with a constant acceleration a. During the time interval T, the work done by contact froce on mass M is (##NAR_NEET_PHY_XI_P2_C06_E09_011_Q01##)

A block of mass m is kept on a platform which starts from rest with constant acceleration g/2 upward, as shown in fig. Work done by normal reaction on block in time t is :

A block of mass m is kept on a platform which starts from rest with constant acceleration g/4 upward, as shown in the figure. Work done by normal reaction on block in time t is:

A block of mass m is kept on a platform which starts from rest with constant acceleration g/2 upward, as shown in fig. Work done by normal reaction on block in time t is :

A block of mass m is kept on a platform Platform starts moving upwards with an acceleration of g/2 . Find the work done by the normal force on the block in the first one second.

A block of mass m is kept on a platform Platform starts moving upwards with an acceleration of g/2 . Find the work done by the normal force on the block in the first one second.

A block of mass M is kept in elevator (lift) which starts moving upward with constant acceleration b as shown in figure. Initially elevator at rest. The block is observed by two observers A and B for a time interval t=0 to t=T . Observer B is at rest with respect to elevator and observer A is standing on the ground. Q. The observer A finds that work done by normal reaction acting on the blocks is

A block of mass M is kept in elevator (lift) which starts moving upward with constant acceleration b as shown in figure. Initially elevator at rest. The block is observed by two observers A and B for a time interval t=0 to t=T . Observer B is at rest with respect to elevator and observer A is standing on the ground. Q. The observer A finds that work done by normal reaction acting on the blocks is

A block of mass M is kept in elevator (lift) which starts moving upward with constant acceleration b as shown in figure. Initially elevator at rest. The block is observed by two observers A and B for a time interval t=0 to t=T . Observer B is at rest with respect to elevator and observer A is standing on the ground. Q. The observer A finds that work done by normal reaction acting on the blocks is