A body of mass m is allowed to fall with the help of string with downward acceleration g/6 to distance x. The work done by the string is

A body of mass m is allowed to fall with the help of string with downward acceleration (g)/(6) to a distance x. The work done by the string is

A mass M is lowered with the help of a string by a distance h at a distance acceleration g//2 . The work done by the string will be

A mass M is lowered with the help of a string by a distance h at a constant acceleration g//2 .The work done by the string will be :

A mass "M" is lowered with the help of a string by a distance "h" at a constant acceleration (g)/(2) .The work done by the string will be

A block of mass m tied to a string is lowered by a distance d, at a constant acceleration of g//3 . The work done by the string is

A body of mass 1kg is made to travel with a unitform acceleration of 30 cm//s^(2) over a distance of 2m , then work to be done is

A string is used to pull a block of mass m vertically up by a distance h at a constant acceleration (g)/(3) . The work done by the tension in the string is

A cord is used to lower vertically a block of mass M , a distance d at a constant downward acceleration of (g)/(4) , then the work done by the cord on the block is

A knife of mass m is at a height x from a large wooden block. The knife is allowed to fall freely, strikes the block and comes to rest after penetrating - distance y. The work done y the wooden block to stop the knife is