Question

list the two way in which friction can be increased and two way in which it can be decreased to our advantages​

Answer 1

Answer:

Friction can be useful.

...

For example:

friction between our shoes and the floor stop us from slipping.

friction between tyres and the road stop cars from skidding.

friction between the brakes and wheel help bikes and cars to slow down.

Answer 2

Answer:

$\bold \red{h} \bold\blue{i} \: \bold{m} \bold \purple{a} \bold \green{t} \bold \pink{e}$

Advantages and Disadvantages of Friction

Friction is the resistance to motion of one object moving relative to another. There are several types of friction. Some advantages and disadvantages of Friction are given below.

Advantages of Friction:

Friction is responsible for many types of motion

It helps us walk on the ground

Brakes in a car make use of friction to stop the car

Asteroids are burnt in the atmosphere before reaching Earth due to friction.

It helps in the generation of heat when we rub our hands.

Disadvantages of Friction:

Friction produces unnecessary heat leading to the wastage of energy.

The force of friction acts in the opposite direction of motion, so friction slows down the motion of moving objects.

Forest fires are caused due to the friction between tree branches.

A lot of money goes into preventing friction and the usual wear and tear caused by it by using techniques like greasing and oiling.

$\boxed{20 \: thanks = inbox}$

$\boxed{f} \red{o} \boxed{l} \pink{l}\boxed{o} \green{w} \: \: \boxed{m} \purple{e}$