How Does a Rotating Ball Affect Force Directions in a Box?

In summary, assuming the rotation is in the vertical plane and the axle is fixed to the box, the force exerted by the rotating ball on the box will be upwards at 12 o'clock, to the left at 3 o'clock, downwards at 6 o'clock, and to the right at 9 o'clock. The force will also include the gravitational force.
  • #1
CJK
1
0
Hello,
I have a question about force produced by rotating ball.
Let's say the ball rotates clockwise.
The rotating ball is attached to the rotation axis with a rigid rod.
The rotating ball is placed inside of the box.
The box is placed on the very sensitive scale.
The box is vibrating.
I would like to know the direction of the force F exerted on the box at each of the following ball positions:
Ball is a 12 o'clock
Ball is a 3 o'clock
Ball is a 6 o'clock
Ball is a 9 o'clock

What would scale show in terms of direction of force F for each of the above positions?

Thanks
 
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  • #2
Your question is not entirely clear. I'll make these assumptions:
The axle of rotation is fixed to the box.
Some mechanism is forcing the ball to rotate around the axle at constant rate.
The vibration is a result of this, not of any additional forces.
The rotation is in the vertical plane.

Ignoring gravity, the force exerted by the ball on the axle (and thence on the box) is the reaction to the centripetal force. At 12 o'clock the force is upwards, at 3 o'clock to the left, etc. Just add the gravitational force for the total.
 

1. What is the force of the rotating ball?

The force of the rotating ball is the force that is exerted on the ball due to its rotation. It is a combination of the centripetal force and the tangential force.

2. How is the force of the rotating ball calculated?

The force of the rotating ball can be calculated using Newton's second law of motion, which states that the force is equal to the mass of the ball multiplied by its centripetal acceleration. This can also be expressed as the product of the ball's mass, velocity, and the square of its angular velocity.

3. What factors affect the force of the rotating ball?

The force of the rotating ball is affected by the mass of the ball, its velocity, and its angular velocity. The direction of the rotation and the surface on which the ball is rotating can also influence the force.

4. How does the force of the rotating ball impact its motion?

The force of the rotating ball is the driving force behind its motion. It is responsible for keeping the ball in its circular path and preventing it from flying off in a straight line. It also affects the speed at which the ball rotates.

5. Can the force of the rotating ball be changed?

Yes, the force of the rotating ball can be changed by altering the factors that affect it, such as the mass, velocity, and angular velocity of the ball. Changing the direction of the rotation or the surface on which the ball is rotating can also impact the force.

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