Question

write down two ways of increasing friction and two ways for decreasing friction​

Answer 1

Answer:) The friction due to air is reduced by making the automobiles streamline. Answer: Method of decreasing and increasing friction Method of decreasing friction: By polishing: Friction between two surfaces can be reduced by polishing them. The interlocking and projections are minimized by this method

Answer 2

The ways to increase the friction:

1.By making grooves bin the sole of shoes and the tyre.

2.By using coarse material in hand.

The ways to decrease friction:

1.The lubricants are used in the machines to reduce the friction.

2.We can also reduce friction by polishing

the objects.