Tied mass with angular velocity

In summary, a tied mass with angular velocity is a system where a mass is attached to a string or rope and rotates at a constant speed around a fixed axis. The length of the string, mass of the object, and applied force can affect its angular velocity. Angular velocity and linear velocity are related through the equation v = rω. The difference between angular velocity and angular acceleration is that the former measures the rate of change of angular position while the latter measures the rate of change of angular velocity. This concept is commonly applied in the design and analysis of rotating machinery and in sports involving circular motion.
  • #1
Hafid Iqbal
15
0
http://img221.imageshack.us/img221/522/fisikaumn.jpg
A small ball (mass = 0,1 kg) tied to a non-stretchable thread moves over a smooth horizontal plane. The other end of the thread is being drawn into a hole O with a 0,8 Newton force so that the ball moves with a constant radius 0,4 m
And then Harry pull the thread with a constant force 4 Newton so that the ball moves come near to hole O until its radius is 0,1 m

a. Work done by Harry = ... J
b. Work done by that ball = ... J

Thank you very much
 
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  • #2
Anyone? :(
 

FAQ: Tied mass with angular velocity

What is a tied mass with angular velocity?

A tied mass with angular velocity is a system in which a mass is attached to a string or rope and is rotating at a constant speed around a fixed axis.

What factors affect the angular velocity of a tied mass?

The angular velocity of a tied mass is affected by the length of the string, the mass of the object, and the force applied to the object.

How is angular velocity related to linear velocity?

Angular velocity and linear velocity are related by the equation v = rω, where v is the linear velocity, r is the radius of rotation, and ω is the angular velocity.

What is the difference between angular velocity and angular acceleration?

Angular velocity is a measure of the rate of change of an object's angular position, while angular acceleration is a measure of the rate of change of an object's angular velocity.

How can the concept of tied mass with angular velocity be applied in real-world situations?

The concept of tied mass with angular velocity is commonly used in the design and analysis of rotating machinery, such as turbines, engines, and motors. It is also relevant in sports, such as in the movement of a ball being thrown or hit in a circular motion.

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