A bucket filled with water weighing 20 kg is raised from a well of depth 20m. If the linear density of the rope is 0.2 kg per meter the amount of work done is (g = 10 `m/s^2`) (in J)

Ten litre of water per second is lifted from well through 20m and delivered with a velocity of 10 m/s, then the power of the motor is :

A person pulls a bucket of water from a well of depth h. if the mass of uniform rope is and that of the bucket full 0f water is M, then work done by the person is.

A body of mass 2 kg is dropped from rest from a height 20 m from the surface of Earth. The body hits the ground with velocity 10 m/s, then work done: (g=10m//s^(2))

The velocity of transverse wave in string whose linear mass density is 3×10^-2 kg/m stretched by a load of 30 kg is (Take g=10 m/s^2 )

A child weighing 25 kg slides down a rope hanging from a branch of a tall tree. If the force of friction acting against him is 200 N, the acceleration of child is (g=10 m//s^(2))

A man slowly pulls a bucket of water from a well of depth h=20m . The mass of the uniform rope and bucket full of water are m=200g and M 19.9kg , respectively. Find the work done (in kJ) by the mean.

A bucket full of water weighs 5 kg, it is pulled from a well 20 m deep. There is a small hole in the bucket through which water leaks at a constant rate. If it is observed that for every meter the bucket loses 0.2 kg mass of water, then the total work done in pulling the bucket up from the well is [g = 10ms^(-2) ]

(b) A 10 kg weight is raised to a height of 2.0 m with an acceleration of 1.5 m//s^(2) . Compute the work done, if g=10 m//s^(2) .

A block of mass 5 kg is raised from the bottom of the lake to a height of 3m without change in kinetic energy. If the density of the block is 3000 kg m^(-3) , then the work done is equal to.

Water is drawn from a well in a 5kg drum of capacity 55L by two ropes connected to the top of the drum. The linear mass density of each rope is 0.5kgm^-1 . The work done in lifting water to the ground from the surface of water in the well 20m below is [g=10ms^-2]