3 Four pulleys are equally spaced along a shaft, and each has an
out-of-balance mass at the same radius. The out-of-balance mass in
the second pulley is 3 kg, and the third and fourth out-of-balance
masses are at 72° and 220° to it.
Determine the masses in the first, third, and fourth pulleys, and
also the angle of the first mass relative to the second if complete
balance is to be obtained.
Answer: 2.26 kg, 1.82 kg, 1.80 kg; 195°
