Question

why it us advised to tie any luggage kept on the roof of a bus with a rope?

Answer 1

 luggage is usually tied with a rope on the roof of buses. When a moving bus suddenly stops, the luggage on its roof tends to continue in the state of motion due to inertia of motion. Hence the luggage fall down from the roof of the bus. Similarly, when a bus suddenly starts, the luggage on the roof of the bus tends to continue in the state of rest and hence fall down from the roof of the bus. Thus, to avoid the falling of the luggage, it is tied with a rope on the roof of a bus.

Answer 2

★Explanation:

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★When some luggage is placed on the roof of a bus which is initially at rest, the acceleration of the bus in the forward direction will exert a force (in the backward direction) on the luggage.

★In a similar manner, when a bus which is initially in a state of motion suddenly comes to rest due to the application of brakes, a force (in the forward direction) is exerted on the luggage.

★Depending on the mass of the luggage and the magnitude of the force, the luggage may fall off the bus due to inertia.

★Tying up the luggage will secure its position and prevent it from falling off the bus.