Question

Explain why the surface of mortar and pestle (silbatta) used for grinding is etched again after prolonged use.

June 13, 2024

Answer

To increase friction to make it more effective for grinding again.

💡 Some Related Questions

Can we reduce friction to zero by using lubricants?

Why is it difficult to balance our body when we accidently step on a peel of banana?

Why do ladies apply soap solution to their hands to put bangles on?

What are the different methods to reduce friction?

Two friends are trying to push a heavy load as shown in figure. Suggest a way which will make this task easier for them.

Give reason While travelling on a rickshaw, you might have experienced that if the seat cover is very smooth, you tend to slip when brakes are applied suddenly

Give reason We have two identical metal sheets. One of them is rubbed with sand paper and the other with ordinary paper. The one rubbed with sand paper shines more than the other.

Why kabbadi players should rub their hand with soil before they start playing?

When the cutting edge of a knife is put against a fast rotating stone to sharpen it, sparks are seen to fly. Explain the reason.

A father and son pushed their car to bring it to the side of road as it had stalled in the middle of the road. They experienced that although they had to push with all their might initially to move the car, the push required to keep the car rolling was smaller, once the car started rolling. Explain.