Luggage on a bus roof is tied down with a rope to prevent it from falling due to inertia. When the bus accelerates or decelerates, the luggage tends to remain at rest or in motion, respectively, due to its inertia, potentially causing it to fall. The rope acts as a restraint, securing the luggage to the roof and preventing it from shifting or falling off.
Here’s a more detailed explanation:
Inertia:
Inertia is the tendency of an object to resist changes in its state of motion. When a bus is stationary, the luggage is also at rest. When the bus starts moving, the luggage, due to inertia, wants to stay at rest and may fall backwards. Conversely, when the bus stops suddenly, the luggage wants to keep moving and may fall forward.
Securing Luggage:
By tying the luggage with a rope, it’s secured to the bus roof. The rope provides a force that counteracts the inertia, preventing the luggage from falling.
Safety:
Tying luggage is crucial for safety. If luggage falls off the roof, it could cause accidents for other road users or passengers.