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Why doesn't gravity play a role on a balls speed when it rolls on a horizontal surface?
For a spherical object to "roll" there needs to be a torque applied to that object. In the case of a ball on an inclined plane, the ball feels a torque due to friction. Gravity acts in a radial direction towards the center of mass of the gravitating object. This causes a force to exist parallel to the plane of the board the ball rests on. That force accelerates the center of mass of the ball in a direction parallel to the plane of the board (only because the board prevents the ball from accelerating towards the Earth's center of mass). If the inclined plane were frictionless, the ball would not rotate, only slip down the plane. Since there is friction, it acts at the edge of the ball which exerts a torque on the ball. This torque causes the ball to rotate.
When the ball is on a horizontal surface there is no component of the gravitational force vector parallel to the surface. Thus, there is no force which can accelerate the ball along the plane of the board. This means the ball has absolutely no reason to move, so it sits still. That is why it does not roll.
To say "Why does not gravity play a role when it rolls on a horizontal surface?" is a very "dangerous" way to word a question. Were gravity to "shut off" the ball would have no reason to stay where was. It would also (in theory) have no reason to rotate since friction requires a force normal (perpendicular) to the plane of the board. Gravity does not simply "quit" because the board no longer has a component of its plane parallel to the direction of gravity.
What else can I help you with?
Why do balls bounce in a parabola?
because: * the force of gravity is constant and downward * the acceleration due to gravity is therefore a result of the square of time * horizontal acceleration is zero so the horizontal velocity is constant * y=vyt -at2 x=vxt all this makes a parabola that opens downwards.
The curved path followed by balls Beach and c are examples of what?
The curved path followed by balls Beach and C are examples of projectile motion, which is a type of motion where an object is thrown or projected into the air and moves in a curved path under the influence of gravity. This type of motion can be described by the horizontal and vertical components of the object's velocity and acceleration.
Does a ball dropped with horizontal velocity take longer to hit the ground than on dropped at rest?
No, both balls will hit the ground at the same time, assuming they are dropped from the same height and in a vacuum. The horizontal velocity does not affect the time it takes for an object to fall vertically due to gravity.
Why do different balls roll the same distance under the force of gravity?
Answer Gravity Finds Means for EqualityThe distance balls roll is a measure of the force of gravitational pull independent of the mass or area or size of each ball.
Does a ball dropped out the window of a moving car take longer to reach the ground that on dropped at the same height from a car at rest?
Both objects would strike the ground at the same moment. This is because gravity acts as an independent (unrelated to the forward movement of the car) force downwards. The force of gravity remains unchanged between both balls also.
What 2 objects does gravity act on?
Gravity acts on all objects with mass. In the context of the Earth, gravity mostly acts on the Earth itself and objects on or near its surface.
When a pitcher throws a baseball what force works against the balls horizontal motion?
Where are you from? Add me on SKYPE! Name: nfsworld_hackerANSWER: GRAVITY
What does gravity have to do with the game of pool?
The force of gravity affects how fast a ball travels after it has been hit. Gravity tends to pull the balls towards the center of the pool table when the balls are struck. Gravity tends to pull the balls towards the center of the pool table when the balls are struck.
Why do balls bounce in a parabola?
because: * the force of gravity is constant and downward * the acceleration due to gravity is therefore a result of the square of time * horizontal acceleration is zero so the horizontal velocity is constant * y=vyt -at2 x=vxt all this makes a parabola that opens downwards.
Can too much sex cause saggy balls?
No. Gravity causes saggy balls. When you get older a man's body can no longer fight gravity as well as it could when he was younger. So the balls sag.
Why are planets shaped like balls?
because of gravity
What is the type of bellybutton piercing when it is 3 balls in a line strait down below the bellybutton?
It sounds to me like your talking about a dermal or a horizontal navel piercing which is a surface piercing. But from the sound of it it's a dermal piercing because I've never seen a surface piercing with 3 balls unless there 3 different piercing in a row. I could help you more if I saw a picture of what your talking about.
The curved path followed by balls Beach and c are examples of what?
The curved path followed by balls Beach and C are examples of projectile motion, which is a type of motion where an object is thrown or projected into the air and moves in a curved path under the influence of gravity. This type of motion can be described by the horizontal and vertical components of the object's velocity and acceleration.
Does gravity and force move balls?
Yes, gravity and force can move balls. Gravity pulls objects downwards toward the Earth, causing them to fall. Force can also be applied to a ball to make it move in a certain direction or accelerate.
Why is my ex is living with someone else?
Because he doesnt have balls and doesnt want responsibility...he wants it it easy, and easy is what he is going to get.
How do you put ten identical balls on a surface so that you can have 5 lines of balls with 4 balls on each line?
are you talking about human balls? YOU CANT DO IT.
How many golf balls on the moon?
There are likely no golf balls on the moon, as they are not something typically found there. However, during the Apollo missions, astronauts did hit golf balls on the moon as a way to conduct experiments on gravity and physics in the moon's lower gravity environment.
