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Friction translates lateral motion to rolling motion, but it can slow down a rolling ball because it opposes the motion of the ball's lower surface to do so. This removes momentum from the ball.
When a ball combines rotational and translational motion (rolls), friction acts in the opposite direction of the motion. This in turn should produce a torque by the frictional force i.e,[u.m.g*R] where R=radius of sphere , u = co-efficient of friction. The torque produced should increase the angular acceleration and therefore the body should rotate with greater speed, but as we know, the rolling sphere stops after a certain time.
REASON: When a sphere rolls, the surface in contact with the sphere is depressed and the surface just in front of it is raised. So when the rolling sphere strikes this raised surface, the normal reaction instead of passing from center of mass passes through a little bit away in the forward direction of the motion. Therefore the torque produced by this is greater than the torque produced by the frictional force, and opposes the motion of the body until it comes to rest.
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What is the principle used in ball bearing?
Bearing principle is very simple: objects rolling easier than slide.
How does rolling ring drive works?
The inner race of a "rolling ring" bearing is specially contoured to form a central "ridge" which runs around the entire inner race surface of the bearing.When mounted on a shaft of rolling ring drive, a rolling ring bearing contacts the shaft only on the apex of this central ridge. The bearing may be "pivoted" left or right on the shaft, and still maintain point contact with the shaft.In a rolling ring linear drive, an assembly of three or four rolling ring bearings is fixed and compressed within a housing. A smooth, threadless shaft is inserted through the housing, and through the rolling ring bearing assembly.When the rolling ring bearing assembly is angled on the smooth shaft, and the shaft is rotated, compression against the central ridge surface is generated causing the bearings to "roll" along the length of the shaft. The rotary motion input provided by the motor-driven shaft is thereby converted to linear motion output. The housing, which bears the payload, moves along with the rolling ring bearing assembly. The angle of the rolling ring bearing assembly, relative to the shaft, determines travel direction and pitch (distance traveled per shaft revolution).No backlash -- Advantage over precision ball screwsBacklash is inherent to ball screw design. It results from the amount of clearance between the ball bearing and the threads. Backlash is caused by clearance or "play" between contacting surfaces in ball screws, gears, belt drives and other linear motion devices. To overcome backlash, ball screw users typically preload the nut to keep the balls under steady pressure. Other methods for fighting backlash include active cam mechanisms, shims and other devices which load the geartrain. These methods can be expensive. And their performance level deteriorates over time due to wear and tear. Okcoil rolling ring drives require no preload to eliminate backlash. Rolling ring engineering assures continuous point-contact between the rolling ring bearing surface and the shaft. There is no "play" and virtually zero backlash - even during reversal. Additionally, rolling ring drives ( trvaverse units) have built-in overload protection. If the system is overloaded, the nut will slip, not jam. Ball screws can't match these features. And ball screws require a significant, up front investment to reduce of backlash before the system can be used for precision linear motion control work.
What is a ball bearing?
it is a mechanical equipment to reduce friction. It is used in moving parts very often.
How do hydraulic cranes bleed the hydraulic system?
With interchangeable rubber washers and bushes and ball bearings can make the bleeding stop.
Define bite angle in rolling mill?
what is bite angle in rolling mill
A rolling ball will eventually stop rolling why does it do that?
It will not, unless it is acted upon another force. If it's rolling on something, then friction will stop it (the ball rubbing on the table slows it down).
It is harder to stop a rolling ball then a pin pong ball when both are rolling at the same velocity this is an example of?
This is an example of inertia. The rolling ball has more mass, so it has greater inertia than the ping pong ball. This means it requires more force to stop the rolling ball compared to the ping pong ball at the same velocity.
How will you stop a rolling ball?
put your hand there to stop it.
When a ball is rolling on the floor and the fingers are used to stop it is work or force used?
Rolling the ball would be work and stopping the ball would be force.
What force causes the motion to stop when a soccer ball is rolling across the grass and begins to slow down then stops?
The main force that causes the soccer ball to stop rolling is friction between the ball and the grass surface it is rolling on. As the ball moves, the grass exerts a force in the opposite direction of the ball's motion, gradually slowing it down until it comes to a stop.
Does rolling soccer ball needs more force to stop than a rolling bowling ball?
Any amount of force can stop either kind of ball. But a greater force is required to stop a bowling ball than to stop a soccer ball IN THE SAME TIME, because the bowling ball has more mass, and therefore more momentum and more kinetic energy.
What force would stop a ball from rolling?
Friction is the force that would stop a ball from rolling. As the ball interacts with the surface it is rolling on, friction counteracts the motion by creating resistance. The type of surface and the smoothness of the ball will influence the amount of friction and, therefore, the stopping force.
What unbalanced force cause a ball to stop rolling?
Friction
Is harder to stop a rolling bowling ball than a rolling ping pong ball when both are rolling at the same velocity Which is this an example of?
It is an example of momentum (sometimes called "inertia"). Velocity x mass. The bowling ball is much, much heavier. With both rolling at the same speed, the bowling ball is harder to stop because it has much more mass.
What type of force will cause that ball to eventually stop rolling on its own?
The most significant force that will cause the ball to stop rolling is kinetic friction. As the ball moves across the surface, the friction between the ball and the ground will slow it down until it eventually stops.
What causes a ball to stop rolling?
A ball stops rolling when the force propelling it forward, such as a push or a slope, is no longer present. Friction between the ball and the surface it's rolling on also plays a role in slowing it down until it eventually comes to a stop.
A rolling bowling ball is hard to stop because?
it has momentum due to its mass and velocity. The rolling motion creates kinetic energy that makes it difficult to slow down or stop abruptly. friction between the ball and the surface also plays a role in resisting its motion.
