Doubt from rotational mechanics

In summary, rotational motion is the movement of an object around an axis or center point, while torque is a measure of the force that causes an object to rotate. Angular velocity is a measure of the rate of rotation, while linear velocity is a measure of the rate of straight line motion. The relationship between torque and angular acceleration is described by Newton's second law for rotational motion, and the conservation of angular momentum states that the total angular momentum of a system remains constant unless acted upon by an external torque.
  • #1
ajaysabarish
58
0
in parallel axes theorem in rotational mechanics,is it necessary that the axes must intersect the body?
 
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  • #2
No, its not necessary.
 
  • #3
Shyan said:
No, its not necessary.
thank you very much
 

1. What is rotational motion?

Rotational motion is the movement of an object around an axis or center point. It occurs when an object rotates or spins, rather than moving in a straight line.

2. What is torque in rotational mechanics?

Torque is a measure of the force that causes an object to rotate around an axis. It is calculated by multiplying the force applied to an object by the distance from the axis to the point where the force is applied.

3. How is angular velocity different from linear velocity?

Angular velocity is a measure of the rate at which an object rotates around an axis, while linear velocity is a measure of the rate at which an object moves in a straight line. Angular velocity is measured in radians per second, while linear velocity is measured in meters per second.

4. What is the relationship between torque and angular acceleration?

The relationship between torque and angular acceleration is described by Newton's second law for rotational motion: torque is equal to the product of an object's moment of inertia and its angular acceleration. This relationship is often expressed as τ = Iα, where τ is torque, I is moment of inertia, and α is angular acceleration.

5. How does the conservation of angular momentum apply in rotational mechanics?

The conservation of angular momentum states that the total angular momentum of a system remains constant unless acted upon by an external torque. This means that in the absence of external forces, the total angular momentum of a system will remain constant throughout any rotational motion.

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