The shelf supports the electric motor which has mass m 1 and mass center at Gm. The

Question:

The shelf supports the electric motor which has mass m₁ and mass center at Gm. The platform upon which it rests has mass m₂ and mass center at Gp. Assuming that a single bolt B holds the shelf up and the bracket bears against the smooth wall at A, determine this normal force at A and the horizontal and vertical components of reaction of the bolt B on the bracket.

Given:

m₁ = 15 kg c = 50 mm

m₂ = 4 kg d = 200 mm

a = 60 mm e = 150 mm

b = 40 mm

g = 9.81m/s²

Gp ь