Donate a Used Bicycle - Bike Works

A prototype rotating bicycle rack is designed to save space at a train station. The combined weight of platform B D and the bicycle is 40 lbs and is centered 1 ft above the midpoint of the platform. The motor at A causes the support beam A B to have an angular velocity of 10 rpm and zero angular acceleration at θ=30^∘ . At this instant. determine the vertical components of the forces exerted on platform B D by the pins at B and D. | Numerade