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Category > Applied Sciences Posted 16 May 2017 My Price 12.00

A pencil is set spinning in an upright position

1. A pencil is set spinning in an upright position. How fast must the spin be for the pencil to remain in the upright position? Assume that the pencil is a uniform cylinder of length a and diameterb. Find the value of the spin in revolutions per second fora = 20cm and b = 1 cm.

2. How fast must a penny (radius a = 0.95 cm) roll to remain upright?

 

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Alpha Geek
(8)
Status NEW Posted 16 May 2017 08:05 AM My Price 12.00

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