Question

A trolley of mass 20kg was orginally at test on a smooth horizontal surface. By how much will it accelerate if a pulling force of 22N is applied on it horizontally

Answer 1

Answer:

Correct option is C)

Here the limiting friction force =μmg=0.25×2×10=5N

Thus the applied force is less than the friction force. So there will not have relative motion in between trolley and mass.

therefore, 2=(20+2)a⇒a=0.09m/s

2

The friction force between mass and surface of trolley =20a=20×0.09=1.8N

Explanation:

Correct option is C)

Here the limiting friction force =μmg=0.25×2×10=5N

Thus the applied force is less than the friction force. So there will not have relative motion in between trolley and mass.

therefore, 2=(20+2)a⇒a=0.09m/s

2

The friction force between mass and surface of trolley =20a=20×0.09=1.8N