Physics
A boy weighing 50 kgf climbs up from the first floor at a height of 3 m above the ground to the third floor at a height of 9 m above the ground. What will be the increase in his gravitational potential energy?
(Take g = 10 N kg-1).
Related Questions
A body of mass 10 kg falls from a height of 20 m to 8 m.
Calculate:
(i) the loss in potential energy of the body,
(ii) the total energy possessed by the body at any instant? (Take g = 10 ms-2).
Calculate the height through which a body of mass 0.5 kg is lifted if the energy spent in doing so is 1.0 J. Take g = 10ms-2.
A vessel containing 50 kg of water is placed at a height 15m above the ground. Assuming the gravitational potential energy at the ground to be zero, what will be the gravitational potential energy of water in the vessel?
(g = 10ms-2).
A man of mass 50 kg climbs up a ladder of height 15m.
Calculate:
(i) the work done by the man,
(ii) the increase in his potential energy.
(g = 9.8 m s-2).