A man lifts a weight of 20 kg to a height of 5 m from the ground. The work done by him is _____. [g = 10 ms-2]

A man lifts a weight of 20 kg to a height of 5 m from the ground. The

1.	A man lifts a weight of 20 kg to a height of 5 m from the ground. The work done by him is _____. [g = 10 ms-2]
A.	1000 N
B.	1000 C
C.	1000 J
D.	1000 Pa
Answer» D. 1000 Pa

Discussion

No Comment Found

Related MCQs

Physical quantity of _____ is measured in watt.
A pump is required to lift 600 kg of water per minute from a well 25 m deep and to eject it with a speed of 50 m / s. If g = 10 m / s2, the power required to perform the above task is
A wedge of mass M = 4m lies on a frictionless plane. A particle of mass m approaches the wedge with speed v. There is no friction between the particle and the plane or between the particle and the wedge. The maximum height climbed by the particle on the wedge is given by:
Find the energy possessed by an object of mass 14 kg when it is at a height of 5 m above the ground Given g = 9.8 ms-2
Energy is the capability or ability to
A passenger train of length 60 m travels at a speed of 80 km/hr. Another freight train of length 120 m travels at a speed of 30 km/hr. The ratio of times taken by the passenger train to completely cross the freight train when: (i) they are moving in the same direction and (ii) in the opposite direction is
A freely falling body takes 4 s to reach the ground. One second after release, the percentage of its potential energy, that is still retained is
A block of mass m is kept on a platform which starts from rest with constant acceleration \(\frac{g}{2}\) upwards as shown in figure. Work done by normal reaction on block in time t is
A positive point charge is released from rest at a distance ro from a positive line charge with uniform density. The speed (v) of the point charge, as a function of instantaneous distance r from line charge, is proportional to:
A man of 25 kg weight climbs 25 stairs in 20 seconds. If the height of each stair is 40 cm, find the power (g = 10 m/s2)

A man lifts a weight of 20 kg to a height of 5 m from the ground. The work done by him is _____. [g = 10 ms-2]

Discussion

No Comment Found

Related MCQs

Reply to Comment