How does the coil in a motor rotate by a full rotation?

What will you observe if You look at the source through two polarizers and rotate one of them around the path of light for one full rotation ?

What will you observe if Instead of rotating only one of the polaroid , you rotate both polaroids simultaneously in the same direction ?

An electric fan has blades of length 30 cm as measured from the axis of rotation. If the fan is rotating at 1200 rpm , find the acceleration of a point on the tip of a blade.

Place a coin on gramophone disc near its centre and set the disc into the rotation. As the speed of rotation increases, the coin will slide away from the centre of the disc. The motion of coin is due to

What is rotational motion?

Define: Optical rotation

The angular velocity of a particle increases from 0 to omega as it completes x rotations. Then number of rotations completed by it when its angular velocity becomes 2 omega .

A disc rotates horizontal at the rate of 100 rpm and M.I. of the disc about the axis of rotation is 1 kg m^2 . If a blob of molten wax weighing 50 gm drops gently at a distance 20 cm from the axis of rotation of the disc and remains stuck to it, then the increase in moment of inertia of the system will be

Why is the moment of a couple independent of the axis of rotation even if axis is fixed?