define torque with explanation and some exp...

419 Points
12 years ago

Dear Baba

The measure of a force's tendency to produce a rotation about an axis is called torque. That is, if a force is used to begin to spin something, or to attempt to spin something, a torque is generated. A torque would also be generated if a force was used to stop something from spinning.

$\boldsymbol \tau = \mathbf{r}\times \mathbf{F}\,\!$
$\tau = rF\sin \theta\,\!$

where

τ is the torque vector and τ is the magnitude of the torque,
r is the displacement vector (a vector from the point from which torque is measured to the point where force is applied), and r is the length (or magnitude) of the lever arm vector,
F is the force vector, and F is the magnitude of the force,
× denotes the cross product,
θ is the angle between the force vector and the lever arm vector.

All the best

AKASH GOYAL

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