Question

what are the disadvantages of heat produced by friction in machines​

Answer 1

Answer:

Disadvantages of friction are:

Oppose motion.

Produce heat in moving parts of machines/engines.

Produce noise in machines /engines.

Makes engines to consume more fuel, in other words it reduces the efficiency of engines.

Cause wear and tear in moving parts of machines/engines.

Explanation:

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Answer 2

Answer:

Disadvantages of friction:

1. ·Friction produces a lot of heat in various parts of the machinery and this leads to wastage of energy as heat.
2. Opposes motion, hence more energy is needed to overcome friction.
3. Noise production in machines is irritating as well as leads to energy loss.
4. Forest fires are caused due to friction between branches of trees.
5. Friction produces unnecessary heat leading to the wastage of energy.

Explanation: