Calculate the kinetic energy of a tractor crawler belt of mass `m` if the tractor moves with a velocity `v`. There is no slipping. Neglect the size of the wheels.

Explanation

The velocity of the centre of mass of the tractor wheel is `v`.
Therefore, velocity of the lower half of the belt at any instant
`=v-v=0`
Velocity of the upper half `v=v+v=2v`
`:. T=1/2(m/2)(2v)^(2)=mv^(2)`