Work done is said to be zero, when

Related MCQs

• If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium
• The loss of kinetic energy during elastic impact is zero.
• A lift moves downwards with an acceleration of 9.8 m/s2. The pressure exerted by a man on the floor of the lift is zero.
• If a body is thrown upwards, then the gravitational acceleration is taken as zero.
• A body is said to move or vibrate with simple harmonic motion if its acceleration is directed towards the mean position.
• A machine which is capable of doing work in the reversed direction, after the effort is re-moved, is called a non-reversible machine.
• A machine which is capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine.
• The energy possessed by a body, for doing work by virtue of its position, is called
• Energy may be defined as the capacity of doing work.
• The rate of doing work is known as