Question

define work and its types? (3 marks) ​

Answer 1

Answer:

• Work is a scalar quantity and is the product of two vector quantities. Depending on the value of q, there are three types of work: When q = 0°, work is said to be positive. Stretching of the spring is an example of positive work as the force is acting in the direction of displacement of the spring.

Answer 2

Work is defined as the force acting on a body which is responsible for the displacement of the body

Works types :-

• When q = 0°, work is said to be positive. Stretching of the spring is an example of positive work as the force is acting in the direction of displacement of the spring.

• When q = 180°, work is said to be negative. The frictional force is an example of negative work as the force is acting in the opposite direction.

• When q = 90°, work is said to be zero. For a body moving a circular path with a centripetal force acting on it with zero speed, the force will be at the right angle