Force, A push or a pull, Unit of Force, Newton (N), Equipment used to measure Force, Spring Balance, Mass, The amount of matter in an object (g/kg) , Weight, A force caused by Gravity, How to Convert Mass to Weight, Mass in Kg multiplied by 10, How to Convert Weight to Mass, Weight in Newtons divided by 10, Friction, Caused by two surfaces in contact with each other, Hooke's law, The extension on a spiral spring is proportional to the force (Weight) applied to it. , Lever, A rigid body free to move around a fixed point called a fulcrum. , See-Saw, An example of a lever., Moment of a force, Turning effect, Calculate the moment of a force, Force applied x distance from the fulcrum.

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