Posted by Dhilsath on Tuesday, July 31, 2012 at 1:55am.
The power developed by a man in riding up a 6 percent grade at a constant speed is 200 w. The man and his bicycle have a combined mass of 80 kg. Determine the speed of riding

Dynamics  drwls, Tuesday, July 31, 2012 at 2:21am
Power = (Rate of increase of potential energy)
A 6% grade is an angle of arctan 0.06 = 3.4336 degrees. The sine of that angle is 0.0599
200 = M*g*V sin3.4336
= 784 *V*0.0599
V = 4.25 m/s

Dynamics  Anonymous, Monday, July 22, 2013 at 9:49am
A pelt on wheel attains its operating speed of 800rev/min within 2 s after it is turned on. determine the constant angular acceleration of the pelton wheel. also find the total number of revolution the wheel makes before it attains its operating speed.
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