Question

Three men manage to push a car of 1200kg at an uniform velocity along a straight road. The same car can be pushed by 5 men to produce an acceleration of 0.5m/s square. Find the force applied by each man? (consider each man applied equal force) ​

Answer 1

Mass of the car=1200 kg

According to question only two people are able to move the car, so the Acceleration acquired by car is given by third the person.

Acceleration produced by car when pushed by third person =0.2 ms

−2

we know F=ma

Force applied by third person (F)=ma

or =1200×0.2

or =240kgms

−2

(N)

according to question all persons pushing the motorcar with the same muscular effort,so the each person applies a force of 240N.