Question

Consider a box lying in the compartment of a train that is accelerating. The box is stationary
relative to the train; thus, it is accelerating along with the train. The force which accelerates the box
here is

Answer 1

Answer:

An example: Consider a box lying in the compartment of a train that is accelerating. If the box is stationary relative to the train, it is in fact accelerating with the train. Clearly, the only force in the horizontal direction is the friction.

   

Answer 2

Answer:

The force that accelerates the box lying in the compartment of an accelerating train is the frictional force in the direction of the train.

Explanation:

• The opposing force that is produced when two surfaces attempt to move in the same direction or in opposite directions is known as frictional force.
• A frictional force is primarily intended to produce resistance to the mobility of one surface across another surface.
• If a box is immobile with respect to the train and is laying within the cabin of a speeding train. The weight of the box and the frictional force between the bottom surface of the box and the train floor would represent the forces acting on the box laying in the compartment of the moving train.
• The box remains immovable to the train as a result of the train's forward acceleration.
• Therefore, it is necessary to apply force in the direction of the train.

Thus, the force which accelerates the box in the accelerating train even though it is stationary along with the train is the frictional force in the direction of the train.

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