collect pictures to illustrate contact forces,forces at a distance and prepare a report ?
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Contact force...
(fig 1 )You observe that there is direct physical contact between your hand and the tube. Force, which results when there is a direct physical contact between two interacting objects, is known as contact force. Ex: Hoisting a flag. A moving bike is stopped when applied brake etc
(fig2) The needle of the compass changes it's direction without any physical contact with the bar magnet. But a force myself be acting on needle, the force which occurs without any physical contact between two objects is known as a force at a distance or field force. Ex: A but is pulling a cart due with force, kicked a football harder etc.
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