A rod of length 50cm is pivoted at one end, It is raised such that if makes an angle of 30° from the horizontal as shown and released from rest. Its angular speed when it passes through the horizontal (in rad s−1 ) will be (g=10ms−2)
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b. |
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c. |
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d. |
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A rod of length 50cm is pivoted at one end, It is raised such that if makes an angle of 30° from the horizontal as shown and released from rest. Its angular speed when it passes through the horizontal (in rad s−1 ) will be (g=10ms−2)
a. |
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b. |
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c. |
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d. |
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Work done by gravity from initial to final position is,
W=mg
=
According to work energy theorem
W=
=
= rad/sec
∴ correct answer is (a)