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Solved: Certain features of a person, such as height and
Chapter 11, Problem 15DQ(choose chapter or problem)
Certain features of a person, such as height and mass, are fixed (at least over relatively long periods of time). Are the following features also fixed? (a) location of the center of gravity of the body; (b) moment of inertia of the body about an axis through the person’s center of mass. Explain your reasoning.
Questions & Answers
QUESTION:
Certain features of a person, such as height and mass, are fixed (at least over relatively long periods of time). Are the following features also fixed? (a) location of the center of gravity of the body; (b) moment of inertia of the body about an axis through the person’s center of mass. Explain your reasoning.
ANSWER:Solution
Step 1
a).Centre of gravity is not a fixed in a human body
.Centre of gravity of a human body is a point on the body in which the force of gravity
appears to be act.It is the point at which the combined mass of the body appears to be
concentrated.
The direction of the force of gravity through the body is downward towards the centre of
the earth and through centre of gravity . this line of gravity gives the balance of the body.
Some time the body get unbalanced ,ie the centre of gravity is not fixed it’s get deviated.