Question

Explain parellel theorem and perpendicular theorem

Answer 1

Explanation:

This theorem states that the moment of inertia of a planar body about an axis perpendicular to its plane is equal to the sum of its moments of inertia about two perpendicular axes concurrent with the perpendicular axis and lying in the plane of the body.

Answer 2

Answer:

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Given:-'O' is the centre of a circle x,y are sides at P.

To prove:- OP | XY.

Construction:- join OQ.

Proof:- OQ>OR.

OP>OR (radius of the circle)

OP | XY (common sides)

Hence , OP is smallest line of triangle OPQ and smallest line is perpendicular . Hence OP | XY.

proved.