Two solid spheres each of mass 2 kg and radius 75 cm are arranged as shown. Find MOI of the system about the given axis.

Option 1 - 3.15 kg m2

Option 2 - 31.5 kg m2

Option 3 - 0.9 kg m2

Option 4 - 9 kg m2

13 Views|Posted 4 months ago

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Answered by

Alok Kumar Singh | Contributor-Level 10

4 months ago

Correct Option - 1

Detailed Solution:

$I = (\frac{2}{5} M R^{2} + M R^{2}) * 2$

$= \frac{14}{5} * 2 * \frac{9}{16}$

$= \frac{63}{20}$

= 3.15 kg m²

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