Answer:
FRICTION
Advantages of Friction:
Friction is responsible for many types of motion
-It helps us walk on the ground
-Brakes in a car make use of friction to stop the car
-Asteroids are burnt in the atmosphere before reaching Earth due to friction.
-It helps in the generation of heat when we rub our hands.
-Friction helps to wear cap, ring, and belt.
-Friction help in the transfer of energy.
-Friction helps in making fire.
Friction helps to hold onto objects.
-Produces unwanted heat.
-Reduces efficiency of machines.
-Eco-hazard.
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.
-A lot of money goes into preventing friction and the usual wear and tear caused by it by using techniques like greasing and oiling.
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Explanation:
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