Question

Explain the concept of turning effect of force in door??​

Answer 1

A moment is the turning effect of a force around a fixed point called a pivot . For example, this could be a door opening around a fixed hinge or a spanner turning around a fixed nut. The size of a moment depends on two factors: ... the perpendicular distance from the pivot to the line of action of the force.

Answer 2

doors and windows are hinged at one end . when we open them, we apply a force on the handle at the other end. The hinged end is fixed . This is the axis of rotation about which the door or window turns...Each point of the door or window that is away from axis describes a circle..