Want this question answered?
I assume this relates to a wheel. When the wheel is rolling, the surface of the wheel is not moving relative to the surface of the road when they are in contact. however, the wheel deforms slightly and because of this, the normal force slightly opposing the motion of the wheel rather than simply pushing it up. This is rolling friction or more commonly known as static friction. When the wheel is sliding, the wheel is sliding over the road's surface, meaning that there is relative movement between the wheel and the road. this is known as sliding friction or kinetic friction.
in the wheel because the treads on the wheel rub against the ground,causing friction
Rolling friction, I believe.
a car wheel on the road
Wheels reduces the friction because to improve the speed of the machines. friction can be reduced with the help of the lubricants.
it makes things move without friction
four wheel tractor
four wheel tractor
four wheel tractor
THE ROLLING ITEM THAT MAKES CONTACT WITH THE FRICTION SURFACE [WHEEL] THE THE DEVICE THAT TRANSMIT THE FORCE FROM THE POWER UNIT TO THE WHEEL. [AXLE]
Cars use a circular wheel because the design of a wheel results in static friction instead of kinetic friction (sliding). This makes it easier for cars to get traction and makes it easier to get moving and also stop. Other shapes just wouldnt be as efficient when trying to do everything.
one wheel men working tractor
A "mechanical front wheel drive" tractor has front-wheel-assist which means that not only the rear drive wheels pull the tractor ahead, but the front wheels also pull the tractor.
I assume this relates to a wheel. When the wheel is rolling, the surface of the wheel is not moving relative to the surface of the road when they are in contact. however, the wheel deforms slightly and because of this, the normal force slightly opposing the motion of the wheel rather than simply pushing it up. This is rolling friction or more commonly known as static friction. When the wheel is sliding, the wheel is sliding over the road's surface, meaning that there is relative movement between the wheel and the road. this is known as sliding friction or kinetic friction.
in the wheel because the treads on the wheel rub against the ground,causing friction
It is obvious that the pedals drive the back wheel in some fashion having a lot to do with the chain between them and gears. The rubber tire on the wheel makes contact with the road and friction makes it go.
friction