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Work Done Basics

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Work Done Basics

Person pushing a box showing work done

📚 Part 1: Understanding Work Done

1. What is work done?

Energy transferred when a force moves an object

The speed of an object

How heavy something is

2. What is the unit for work done?

Newtons (N)

Joules (J)

Metres (m)

3. To calculate work done, you need to know:

Force applied

Distance moved

Time taken

Weight of object

4. The formula for work done is:

Work done = force × time

Work done = force × distance

Work done = distance × time

🔢 Part 2: Simple Calculations

5. A person pushes a box with a force of 10 N for a distance of 5 m. Calculate the work done.

Formula: Work done = force × distance

Force = _______ N

Distance = _______ m

Work done = _______ × _______ = _______ J

6. Complete the table:
Force (N) Distance (m) Work Done (J)
20 3 _______
15 _______ 45
_______ 4 80
7. Sarah lifts a 2 kg bag of sugar from the floor to a shelf 1.5 m high. If the force needed is 20 N, how much work is done?

Show your working:




Answer: _______ J

✏️ Part 3: Real-Life Examples

8. Give two examples of when work is being done:

1. _________________________________________________


2. _________________________________________________

9. Explain why no work is done when you hold a heavy bag still in your hands.
10. A crane lifts a 500 kg concrete block 10 m high using a force of 5000 N. Calculate the work done and explain why this is useful.

Calculation:



Work done = _______ J


Why is this useful?



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