Introduction to Torque-Angular Momentum-Equilibrium
Here we will define and briefly discuss Torque-Angular Momentum-Equilibrium
The Turning effect of a force on the body is called Torque.
The unit of torque is N · m. Although its dimension is the same as that of the work, but they are quite different quantities. The torque is a vector quantity while work is a scalar.
Note that the torque ~τ depends not only on the force ~F, but also on the choice of the reference O
The vector product of position vector p with momentum P relative to the fixed origin at that instant is called Angular Momentum. OR
In rotational motion , the analogue of linear momentum is called Angular Momentum
The unit of angular momentum in SI system is kg · m/s or J · s
The body in the state of rest or moving with the uniform velocity , it is said to be in the state of Equilibrium
A rigid body, is a body in which the distance between any two particles does not change during motion; otherwise the system is called elastic. The forces acting on a rigid body do not change its shape and size. However they may change its state from one at rest, for example, to one of translational or rotational velocity. The body is said to be in equilibrium if the external forces acting on it do not produce any change in its translational or rotational state.
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