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3 Mechanics

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Question 189

A uniform rod AB AB\,AB has length 5 m and mass 8 kg. It is supported horizontally by a pivot at PPP, where AP=2AP=2AP=2 m. A particle of mass 5 kg is attached at AAA. A particle of mass m m\,m kg is attached at BBB, and the rod is in equilibrium.

a.

Find mmm.

[3]
b.

Find the magnitude of the reaction at PPP. Use g=9.8g=9.8g=9.8 m s−2^{-2}−2.

[2]
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3 Mechanics Questions

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