Question

Petrol tankers along the Highways often have metal chains attached that drag along the road explain the reason for this.Pls answer fast friends it's urgent

Answer 1

bcs as we apply force on first body which is attached to other bodies will move

Answer 2

When a body travels enough, it produces static energy all along. So in order to suspend all the static energy build-up, the chain is attached which constantly transfers the static energy to the ground on which the petrol tanker travels on in order to prevent excessive static energy build up which can lead to combustion resulting in a blast.