Question

It is easier to drive a screw rather than a nail of the same size into a wall because:

• A. The nail moves a larger distance for the same force applied
• B. The screw moves a larger distance for the same force applied
• C. The direction of force applied in the screw is perpendicular to its movement
• D. The screw acts as a wedge

Answer 1

The correct option is C The direction of force applied in the screw is perpendicular to its movement

In screws the direction of force applied is perpendicular to the wall and due to its cuts present their is a force applied tangential to the wall which helps in easy movement of the screw.