Question

The SI unit of torque is Nm and not joule​

Answer 1

Answer:

The SI units of torque is a Newton-metre (Nm).

Newton-metre(Nm) is also a way of expressing a Joule (the unit for Energy).

The distinction arises because energy is a scalar quanitity, whereas torque is a vector.

Torque is a measure of how much a force acting on an object causes that object to rotate.

Mathematically,

Torque = F×d = Fd sinθ

Where,

F = Force applied,

d = Perpendicular distance of force from the axis of rotation,

θ = angle between the force applied and the axis of rotation.