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Turning effects of forces

Turning Effects of Forces *The turning effect of a force is known as the moment.

Turning Effects of Forces

*It is the product of the force multiplied by the

perpendicular distance from the line of action of the force to the pivot or point where the object will turn.

Moment The moment of a force M is a measure of its tendency to cause a body to rotate about a specific point or axis. Its expressed in Newton-meter(Nm) and is represented by,


Equilibrium An object is said to be in equilibrium, If - The forces on it are balanced (no resultant force) - The turning effects of the forces on it must also be balanced (no resultant turning effect).

Stability - Stability refers to the ability of a body to restore to its original static equilibrium, after it has been slightly displaced. - The center of gravity of a plane lamina of irregular shape can be determined by a plum line experiment.

Center of Mass - The center of a mass is a point at which the entire of a body is equally distributed. - To calculate center of mass, If there are two masses m1 and m2 separated by distances x1 and x2 from a fixed point, The center of mass (X) is given by, X=m1x1+m2x2/m1 +m2

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