A lorry of mass 2000 kg is traveling up a hill of certain height at a constant speed of 10 m/s. The frictional resistance is 200 N, then the power expended by the coolie is : `(g=10 m//s^(2))`

An elevator of total mass 1800 kg is moving up with a constant speed of 2m/s . A frictional force of 4000 N acts on this motion. What is the power exerted by gravitational force ?

An elevator of total mass 1800 kg is moving up with a constant speed of 2m/s . A frictional force of 4000 N acts on this motion. Determine the minimum power delivered to the elevator.

A mass of 2 kg tied to a string 1 m length is rotate in a verticle circle with a uniform speed of 4 m//s . The tension in the string will be 52 N, when the mass is at (g=10 m//s^(2))

A bike of mass 200 kg (with rider) is running on the road with constant speed 5 m//s , the reaction exerted on the bike by the road at the lowest point will be ( g= 10 m//s^(2) )

A body of mass 10 kg moving at a height of 2 m, with uniform speed of 2 m/s. Its total energy is

A man of mass 65 kg is holding a bucket of mass 15 kg. He walks 50 m on a level road at a constant speed of 3 m/s and then climbs up a hill of height 20 m. What is the work done by the man? Take g = 10 m/s^2 .

A bullet of mass 100 g is fired by a gun of 10 kg with a speed of 2000 m/s find recoil velocity of gun

A body of mass 4kg is projected vertically up with a velocity of 20ms^(-1) . If the energy spent in overcoming air resistance is 200J ,the maximum height attained by it is? (g=10m/ s^(2) )

A mass of 5 kg is tied to a string of length 1.0 m is rotated in vertical circle with a uniform speed of 4 m//s . The tension in the string will be 170 N when the mass is at (g=10 m//s^(2))