Answer the following questions:
1. Differentiate between the force in contact and force at a distance, Give two examples of each,
2. What are the advantages and disadvantages of friction?
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Answer:
1. Contact force act between bodies in contact. where as distance force act between bodies separated by distance. Every object on earth even part of earth which is not contact exerts a force which is mostly distance force. ... Ex for force acting at a distance= magnetic, gravitational force.
Explanation:
2. Disadvantages of Friction: Friction produces unnecessary heat leading to the wastage of energy. The force of friction acts in the opposite direction of motion, so friction slows down the motion of moving objects. Forest fires are caused due to the friction between tree branches.
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