Question

Weight lifters rub a special substance on their hands before lifting the weights. Give reason.
Help me with this question asap plsss!!!

Answer 1

★ Required answer :-

• Weight lifters rub their hands with powder/soil for a better grip of the rod$.$

• By doing this, Friction can be increased.

• In these cases, friction should be more and if it is less, we have to increase the friction.

• This is done cause the weight lifters hands can be sweaty.. By rubbing with powder, It will absorb the sweat or grease in there hands.

Know more :-

Have you ever thought why the sole of your shoe is grooved?

The soles of shoes are grooved to provide better grip on the floor or roads to move safely because grooving increases friction between the floor and shoes.

Why the tyres of vehicles are treaded ?

The tyres of cars and other vehicles are treaded to run without skidding by increasing the friction between tyres and the road.

Did you ever observe the brakes of bicycle or motor bike?

How do they work?

• They are made up of rubber with grooved surfaces, which increases the friction with the rims of the wheel and helps to stop the vehicle.

• When we press the brake lever, the brake pads arrest the motion of the rim due to friction and the wheel stops moving.

• This is how brake stops moving bicycles and automobiles.

And,

• Kabaddi players rub their hands with soil for a better grip of their opponents.

• Roads are made rough to prevent from slipping.

• Handle of cricket and tennis are made of rough materials to get better grip.