Forces and Work

Forces and Work

Most forces, such as pushing and pulling, makes an object move.

When a force makes an object move, scientists say that work s done.

If a force is used but the object does not move over a distance, then work is not done.

Imagine you are pushing against a wall. No work is being done as the wall is not moving, even though you could be pushing really hard.

Open Ended

Describe a situation where you use lots of effort but do not get any work done.

How we know that work is being done?

When an object is moved by a force we can say that work is being done.

Open Ended

Explain how you know if a force acting on an object results in work being done.

Is work being done?

When you pick up your bag from the desk, a force is acting on it and the bag is moving over a distance.

If you hold the bag without moving it, work is not being done as the bag is not moving.

Open Ended

Explain why holding a bottle of soda does not show that work is being done.