Question

Suppose you pull your schoolbag with a force of 30N parallel to the ground to your classroom 20 m away how much work have you done​

Answer 1

Answer:

work=600J

Explanation:

work=force*displacement

work=30 N*20m

work=600J

Answer 2

Given: Force = 30N

           Distance = 20m

To find: Work done.

Solution:

• Work is said to be done when a force is applied to an object, the body experiences displacement.

• It is represented by W. Formula of Work = F.SCosθ (where F is force, S is the displacement, θ is the angle between the force applied and the displacement.)
• The force exerting on the block is constant, but the direction of force and direction of displacement influenced by this force is different.
• W = 30×20Cos0°  ( Cos0° = 1)

            = 600 Joule

• The SI unit of work is the joule.
• There are three types of work. Positive work done, Negative work done and zero work done.