W = Fs Work is done when (a) a force acts on an object (b)...
Work and energy
Question Category: Work and energy
Explain the following terms with one example each: (a) Positive
(a) When force acts in the direction of motion of body work done is positive....
From where do we get energy for the life processes?
The energy required for the various life processes comes from the food that we eat....
Moment of force and work done by a force have
The moment of force (also called torque) and work done by a force both have...
A coolie is walking on a railway platform with a
Work done by the coolie is zero, as W = Fs cos 90° = 0.
State the law of conservation of energy.
The law of conservation of energy states that energy can neither be created nor destroyed,...