Two persons manage to push a motorear of mass 1200 kg at a uniform velocity along a level road. The same motorcar can be pushed by three persons to produce an acceleration of 0.2 `ms^(-2)`. With what force does each person push the motorcar.? (Assume that all persons push the motorcar with the same muscular effort.).

Explanation

Here, m-= 1200 kg
a = 0.2 `ms^(-2)`
It is clear from the statement of the question that accelerating force is exerted on the motorcar on by the third person. Let it be F.
`therefore" "` F = ma
`=1200xx0.2N`
= 240 N
As all the persons push the motorcar with the same musular effort, therefore, force with each person pushes the force=240 N