A spherical solid ball of 1 kg mass and radius 3 cm is rotating about an axis passing through its centre with an angular velocity of 50 rad `s^(-1)`.

Question

A spherical solid ball of 1 kg mass and radius 3 cm is rotating about an axis passing through its centre with an angular velocity of 50 rad `s^(-1)`.

A spherical solid ball of 1 kg mass and radius 3 cm is rotating about an axis passing through its centre with an angular velocity of 50 rad `s^(-1)`. The kinetic energy of rotation is
A. 9/20 J
B. 90 J
C. 910 J
D. 4500 J

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
`I=(2)/(5)MR^(2)` and `KE=(1)/(2)I omega^(2)`

5 views Answered 2023-02-05 15:29