Traveller’s bags have wheels. - Vidyadip

Question

Traveller’s bags have wheels.

✓

Answer

Combination of wheel and axle is a simple machine.
When the axle starts rotating due to force applied, the wheel fitted to it also starts rotating.
This makes easier for travellers to carry heavy load.
Instead of lifting heavy bag, to drawing it on wheels require less energy. Therefore, traveller’s bag have wheels.

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