Question

v) A uniform disc and a hollow right

circular cone have the same formula

for their M.I., when rotating about their

central axes. Why is it so?​

Answer 1

Moment of inertia of uniform disc and a hollow right  circular cone:

• The moment of inertia is the torque required to rotate the shape with angular acceleration.
• It depends on mass distribution about the rotational axis whereas it does not depends on shape or mass or size of the body.
• The moment of inertia is equal for two bodies when they are symmetric about all the axes.
• The moment of inertia of uniform disc and a hollow right  circular cone is 1/2 × MR²
• The hollow right  circular cone along the diameter is symmetric to uniform disc.

Answer 2

Answer in attachment

Explanation:

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