Question

Which of the following method can increase friction?

• A. Applying lubricant.
• B. Applying powder on carrom board.
• C. Making shoes with spikes.
• D. Adding wheels to a sliding cart.

Answer 1

The correct option is C Making shoes with spikes.

Friction can be increased by making the surface irregular. By applying lubricants and applying powder on carrom boards, the surface is made smooth and hence the friction decreases. By adding wheels, sliding friction is changed to rolling friction. As rolling friction is less than sliding friction, the friction decreases. By adding spikes, the grip of the shoe increases and hence friction increases.