Science questions in on sentence. [1 M]

The special shape is more like a point shaped so that they cut the fluid friction.

The tyres of the car wear out due to friction produced between he tyres and the car when a car is moving.

It is very difficult to walk on a wet floor because the friction is less and the required grip cannot be maintained.

Frictional force is responsible the wearing of car tyres.

The direction of force of friction acting on this car due to surface of road is along the south direction i.e. opposite to the direction of motion.

The sports people use shoes with spikes, spikes increase the friction with the ground and does not let the person slip or fall when running fast.

Sprinkling fine powder on carrom board reduces friction between carom and striker.

Drag is the special name of frictional force exerted by fluids.

Frictional forces helps things to move and stop.

The friction always opposes the motion.

Pulley.

Oiling the-axles of a bicycle reduces the friction and thus the bicycle moves easily.

The well-polished floor offers very less resistance. Therefore, the shoes slip on it and its very difficult to walk properly.

Ball bearing reduce friction between the support loads and axles of a vehicle.

Kabaddi players rub their hands with dry soil before playing so as to increase friction. This enables them to grip the other player’s hand properly.

Fluids are those whose which do not have any shape and flow like liquids. Example- Air and Blood.

Frictional force increases when the two surfaces in contact are made more rough.

The surface of a slide polished to make it smooth in order to reduce friction.

A spring balance is used to measure the weights of object with the help of tension force.

It will make more difficult to walk on the floor. As soapy solution decreases the friction on the floor.

Frictional forces prevent us from slipping every time you take a step forward.

The tyre’s surface has treads on it. Treads improve the grip of the tyre on the road.

By applying any lubricant say grease, one can reduce friction between those machine parts which rub against each other to avoid wear and tear.

Rolling friction is the friction or drag which opposes the motion when a body rolls.

Friction enables us to fix nails in a wall and knots to be tied.

Frictional force gets reduced when the two surfaces in contact are polished to make them smooth.

The shoes rub on the ground while walking. The ground offers friction due to which the sole of shoes wear and tear out.

The ball bearing help in reducing the friction between the wheels and it axle.

Gymnasts apply a coarse substance to their hands to increase the frictional forces on their hands so that they can hold firmly.

The friction forces always act in the opposite direction of motion.

A car spins on icy road because the treads of the car can no longer maintain the proper friction to keep it moving. Due to ice, the friction reduces and the car spins.

Grooves in the soles of shoes help in increasing the friction when we walk on the roads. The grooves in the shoe sole help in maintaining a grip with the ground.

Frictional force is responsible the wearing of footsteps of over-bridges.

Car.

Ball bearing is used between the hubs and axles of bicycle wheels to reduce friction.

Car and bicycle.

Rolling friction comes into play when a book kept on cylindrical pencils is moved by pushing.

Dynamometer is used to measure the forces acting on any object.