Question

A stone of mass 1 kg is lying on the floor of a train which is accelerating with $1ms^{- 2}$. The net force acting on the stone is :

• A. Zero
• B. 1 N
• C. 5 N
• D. 10 N

Answer 1

Answer: (B)

1 N

Answer 2

Here, mass of the stone , m = 1kg

As the stone is lying on the floor of the train, its acceleration is same as that of train

$\therefore$Force acting on the stone,

$F = ma = (1kg)(1ms^{- 2}) = 1N$