Question

Give reasons A] we can hold things in our hands without falling down B] wear and tear occur in the machine parts C] goods vehicles have large tyres​

Answer 1

Answer:

A) due to force of friction we can hold things in our hands.

the force of friction acts between two bodies.

with help of this we can walk, write , run etc .

B) wear and tear happens due to force of friction, this force acts in the opposition direction. As machine parts move in forward , it will act in backward direction. this leads to wear and tear .

As the soles of our footwear gets wear and tear after some time, they become slippery as well.

C) to balance the force of friction , so that they don't met any accident due to imbalance on the roads.