A stone of mass 1 kg is lying on the floor of a train which is accelerating with 1 m s-2. The net force acting on the stone is

Question

A stone of mass 1 kg is lying on the floor of a train which is accelerating with 1 m s-2. The net force acting on the stone is (A) Zero (B) 1 N (C) 5 N (D) 10 N

Tardigrade Admin · Accepted Answer

Here, mass of the stone, m = 1 k g As the stone is lying on the floor of the train, its acceleration is same as that of train. ∴ Force acting on the stone, F=ma (1 kg) (1 m s-2) =1 N Note: Here weight of the stone is balanced by the normal reaction of the floor.

Q. A stone of mass $1 k g$ is lying on the floor of a train which is accelerating with $1 m s^{- 2}$ . The net force acting on the stone is

Zero

$1 N$

$5 N$

$10 N$

Here, mass of the stone, $m = 1 k g$
As the stone is lying on the floor of the train, its acceleration is same as that of train.
$∴$ Force acting on the stone, $F = ma$ $(1 k g)$ $(1 m s^{- 2})$ $= 1 N$
Note : Here weight of the stone is balanced by the normal reaction of the floor.

Q. A stone of mass 1kg is lying on the floor of a train which is accelerating with 1ms−2. The net force acting on the stone is