Rohit is making various figures by card sheet with the help of scissor. Which force is being used in this activity?

Question

Accepted Answer

The correct option is 3:
The force being used when Rohit cuts a card sheet with a scissor is primarily classified as **Mechanical force**. Mechanical force is a general term that refers to any force resulting from the application of energy to an object through a machine, tool, or physical action, which causes motion or changes the shape of the object. In this case, the scissor acts as a simple machine (specifically, a lever) that transmits and amplifies the input force. Although the ultimate source of energy comes from Rohit’s muscles, the force delivered by the tool (the scissor blades) that directly shears the card sheet is a mechanical action resulting in a mechanical force being applied to the material. This action causes a physical change—cutting the card sheet—which is the definition of work done by mechanical means.

The incorrect option is 1:
Muscular force is the source of energy and the initial input for the action, but it is not the force directly applied to the card sheet. Muscular force is used to operate the scissor handles; the scissor itself applies the mechanical force to the card sheet to perform the cut.

The incorrect option is 2:
Frictional force is the resistance encountered when two surfaces rub against each other. While friction is present (for example, between the scissor blades, or between the blades and the card sheet), it opposes the motion and is not the intended force that achieves the cutting action.

The incorrect option is 4:
Gravitational force is the attractive force between any two masses, typically felt as weight pulling objects toward the Earth's center. Gravitational force plays no role in the act of cutting itself, as the cutting is a lateral shearing action, not a vertical force of attraction.