We’re going to learn how to calculate the amount of work done by forces by looking at how the force acts on the object, and if it causes a displacement. Have you spotted the three things you need to know in order to calculate the work done?

• Force

• Displacement

• Angle between the force and displacement vector (called theta)

The easiest way to do this is to show you by working a set of physics problems. So take out your notebook and a pencil, and do these problems right along with me. Here we go!

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Click here to go to next lesson on Work done by Friction.

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