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Forces (Friction. (Advantages. (Warms hands when they are rubbed together.…
Forces
Friction.
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The rougher the two surfaces in contact are, there more friction there will be.
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Law of the lever.
The law of the lever states that when a lever is balanced the sum of the clockwise moments equals the sum of the anticlockwise moments .
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Calculations
Force (N) = mass (kg) x Acceleration (ms/2)
weight (N) = mass (kg) x acceleration due to gravity = mass (kg) x 10 ms/2
