Answers

2014-03-04T22:26:07+08:00
Hello! The types of forces are....Gravitational force, frictional force, tension force, normal force, resistance force, applied force, spring force, electrical force and magnetic force :) 
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2014-03-04T22:30:45+08:00

A Static Load : A good example of this is a person seen on the left. He is holding a stack of books on his back but he is not A Dynamic Load : A good example of a dynamic load is the person on the right. He is carrying a weight of books but walking. The force is moving or DYNAMIC. moving. The force downwards is STATIC Internal Resistance : The person in the diagram is sat on the mono-bicycle and the air filled tyre is under great pressure. The air pressure inside it pushes back against his/her weight.Tension : The rope is in “tension” as the two people pull on it. This stretching puts the rope in tension.Compression : The weight lifter finds that his body is compressed by the weights he is holding above his head.  Shear Force : A good example of shear force is seen with a simple scissors. The two handles put force in different directions on the pin that holds the two parts together. The force applied to the pin is called shear forceTorsion : The plastic ruler is twisted between both hands. The ruler is said to be in a state of torsion. .

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