Table of Contents
- 1 Does torque always cause rotation?
- 2 Is torque always specified with regard to the axis of rotation?
- 3 Does torque cause translational motion?
- 4 How are torque and the distance of the applied force related?
- 5 What is relation between torque and angular momentum?
- 6 Is torque directly proportional to speed?
- 7 What is the direction of torque?
- 8 What is torque dependent on?
Does torque always cause rotation?
A torque is also a vector quantity and produces a rotation in the same way that a force produces a translation. Namely, an object at rest, or rotating at a constant angular velocity, will continue to do so until it is subject to an external torque.
Is torque always specified with regard to the axis of rotation?
The torque, specified with regard to the axis of rotation, is equal to the magnitude of the component of the force vector lying in the plane perpendicular to the axis, multiplied by the shortest distance between the axis and the direction of the force component. Torque is measured in newton metres in SI units.
How is torque related to rotational speed?
Torque is the rotational equivalence of linear force. Speed measures the distance covered in unit time. The relation between torque and speed are inversely proportional to each other. The torque of a rotating object can be mathematically written as the ratio of power and angular velocity.
Does torque cause translational motion?
Just as an unbalanced force is required to change the motion of an object in linear (translational) motion, a torque is required to change the motion of an object in rotation motional….Rotational Motion.
| distance/displacement | d in m | q in rad |
|---|---|---|
| force | F in Newtons | t in N m |
| mass | m in kg | I in kg m2 |
The distance from the pivot point to the point where the force acts is called the moment arm, and is denoted by ‘r’. In other words, torque is the cross product between the distance vector (the distance from the pivot point to the point where force is applied) and the force vector, ‘a’ being the angle between r and F.
Why is torque along the axis?
Since forces change the translational motion of objects, the rotational counterpart must be related to changing the rotational motion of an object about an axis. We call this rotational counterpart torque. In everyday life, we rotate objects about an axis all the time, so intuitively we already know much about torque.
What is relation between torque and angular momentum?
The torque is defined as the rate of change of angular momentum which is the same as the cross product of the linear force and the distance from the axis. i.e., →τ=→r×→F⇒→τ=|→r||→F|sinθˆnand,→L=→r×→p⇒d→Ldt=d(→r×→p)dt∴→τ=d→Ldt=|→r||→F|sinθˆn.
Is torque directly proportional to speed?
Torque is inversely proportional to speed. Thus, when speed increases, torque will decrease.
What is torque What role does torque play in the rotational motion of machines?
Torque is the rotational equivalent of force. Specifically, it is a force exerted at a distance from an object’s axis of rotation. In the same way that a force applied to an object will cause it to move linearly, a torque applied to an object will cause it to rotate around a pivot point.
What is the direction of torque?
Torque is inherently a vector quantity. Part of the torque calculation is the determination of direction. The direction is perpendicular to both the radius from the axis and to the force. It is conventional to choose it in the right hand rule direction along the axis of rotation.
What is torque dependent on?
The magnitude of torque of a rigid body depends on three quantities: the force applied, the lever arm vector connecting the point about which the torque is being measured to the point of force application, and the angle between the force and lever arm vectors.
How is torque different from a force?
Torque is a type of force that is applied to an object which results in the object rotating around an axis. Force is an action that causes a change in the motion of an object.