In our day to day lives, we frequently use the word ‘work’ to describe activities we do in the course of the day. Doing your homework, folding clothes, making a presentation on the computer, all these are considered as work in everyday language.
Rotational motion is a kind of motion in which the body follows a curved path. For example, the wheel of the car or train is in constant rotational motion.
Robert Hooke, an English scientist, gave the Hooke’s Law of elasticity in 1660. It states that for the relatively small deformations of an object, the size of the deformation or displacement is directly proportional to the deforming load or force. With these conditions, the object would return to its original size and shape with removal of the load
Newton’s first law of motion states that a body continues to be in the state of rest or in the state of motion until and unless acted upon by some external force