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Centripetal Force Multiple Questions and Answers.
| 6. | The moment of inertia of a uniform circular disc about its diameter is 100 gcm2. What is its moment of inertia about an axis perpendicular to its plane. | ||
| A. | 500 gcm2 | ||
| B. | 100 gcm2 | ||
| C. | 200 gcm2 | ||
| D. | 700 gcm2 | ||
| 7. | Calculate the moment of inertia of the earth about its diameter, taking it to be a sphere of 1025kg and diameter 12800km. | ||
| A. | 1.64 kgm2 | ||
| B. | 16.4×1038 kgm2 | ||
| C. | 1.64×1038 kgm2 | ||
| D. | 0 | ||
| 8. | A torque of 2×10-4 Nm is applied to produce an angular acceleration of 4rad/s2 in a rotating body. What is the moment of inertia of the body? | ||
| A. | 0.5 kgm2 | ||
| B. | 5×104 kgm2 | ||
| C. | 0.5×10-4 kgm2 | ||
| D. | 0.5×104 kgm2 | ||
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