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Friction
Rhett Strosin
Wiki User
∙ 8y agoFriction
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If a ball isn't moving which force causes it to start moving?
We might say that an unbalanced force causes a ball to start moving. If a ball is resting on a surface, gravity is pulling down and the surface is pushing up against it. Things (forces) are in balance and the ball is still. Drop the surface out from under the ball and that ball begins to fall as gravity has no opposing force to balance it.Any lateral force on the ball that can overcome its rolling resistance will cause the ball to move. The inertia of the ball is such that it "wants" to remain at rest. Some unbalanced force will have to act on the ball to cause it to start moving. A ball on a pool table sits still until struck by a cue or another ball. It takes an "outside" force to "unbalance" the forces acting on a ball that is at rest to cause it to move.
What is the unbalanced force of kicking a ball back and forth to each other?
1) While the ball is kicked, the main force is the force of the foot against the ball.2) While the ball is in the air, the main force acting on the ball - again, an unbalanced force - is gravity.
Does a ball rolling down a hill cause static friction?
Friction is one force causes a ball to roll downhill. The smaller the static friction coefficient, the more liable the ball will be to skidding instead of rolling. Static friction is involved in a ball rolling downhill.
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.
How do you find the net force in each axis on a rolling ball?
Generally, only two forces act on a rolling ball. Gravity and friction (there has to be friction because without it, the ball would just slide). These are pointed directly in the x and y directions. If the ball is rolling down a slope, you can use trigonometry to find the force components.
What force will stop a ball from rolling?
That force is called an Opposing Force.
Unbalanced forces in volleyball?
Unbalanced forces are important in order to move anything. An object under balanced forces does not move. For example as you sit in your chair reading this, gravity is exerting a force on your body downwards but your chair balances this force by exerting a force upwards on you that is equal and opposite to the force of gravity. These two forces oppose each other and therefore you do not move. In tennis in order to change the direction of a tennis ball you need to exert a net force(an unbalanced force) in the direction you want the tennis ball to move. In tennis there are also unbalanced torques(a force acting at a distance from a pivot point) on the ball that cause the ball to spin. Hope that helps.
What is an unbalanced fprce?
An unbalance force is one that is not opposed by an equal and opposite force operating directly against the force. Examples of unbalanced force are when you kick a ball, or slide furniture across the floor.
Earth exerts an unbalanced force on a ball thrown into the air?
True. Gravity.
What causes a change in motion a balanced or unbalanced force?
Forces on a moving object are balanced only when the object is moving at a constant velocity. Remember, acceleration is a force and a constant velocity is equivalent to zero acceleration. Think of a ping pong ball that you drop from a few meters above the ground: After a short acceleration the ball reaches "terminal velocity" when the air resistance balances the gravitational acceleration. After this, the forces on the ball are balanced (although it is moving, the velocity - speed & direction - of the ball is not changing)
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).
Why does a ball that is rolling come to a stop?
a round object rotates when there is a force acting tangentially.. in this case friction force is acting tangentially... so it should be rolling without stopping.. but it does stop since the weight is not balanced by its normal force(i.e. normal force and weight are not acting on the same point.)
