How to calculate work done against friction?

To calculate work done against friction, we need to use the formula W = Fd, where F is the force applied and d is the distance moved.

Friction is a force that opposes motion and is proportional to the normal force acting on an object. The work done against friction is equal to the product of the force of friction and the distance moved in the opposite direction of the force.

For example, if a force of 10 N is applied to move an object a distance of 5 m against a frictional force of 5 N, the work done against friction can be calculated as follows:

Work done against friction = force of friction x distance moved
= 5 N x 5 m
= 25 J

Therefore, the work done against friction in this scenario is 25 J.

A-Level Maths Tutor Summary: To calculate the work done against friction, use the formula W = Fd, where W is the work, F is the frictional force, and d is the distance moved. Simply multiply the force of friction by the distance. For instance, if you push against a 5 N frictional force for 5 m, the work done is 25 Joules (J).