1.State the two differences between contact force and non-contact force.
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Contact force occurs due to the contact between two different objects. Non-contact force occurs due to either attraction or repulsion between two objects such that there is no contact between these objects. There is no field linked with the contact force. There is always a field linked with non-contact force.
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contact force = some forces act on an object only when they are in contact with the body like frictional force or muscular force these are known as contact forces.
EX.. left a heavy box from the floor, roll a ball through the floor...
non contact force = there are some forces that act on an object without any physical contact these are known as non contact forces.
EX.. throw a ball upwards
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