Question

befine what the centre of gravity is? why is the centre of gravity important to know?

Answer 1

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⟶ Centre of gravity, in physics, an imaginary point in a body of matter where, for convenience in certain calculations, the total weight of the body may be thought to be concentrated. The concept is sometimes useful in designing static structures (e.g., buildings and bridges) or in predicting the behaviour of a moving body when it is acted on by gravity.

⟶ It is important to know the centre of gravity because it predicts the behaviour of a moving body when acted on by gravity and it is also useful in designing static structures such as buildings and bridges. In a uniform gravitational field, the centre of gravity is identical to the centre of mass.

Answer 2

Centre of Gravity -

Centre of gravity of a body is a point where the algebraic sum of moments of weights of all particles constituting the body is zero. The entire weight of the body is said to be acting upon this point.

Use of Centre of Gravity -

Centre of gravity is usually used to find out the actual weight of the body.