Problem

A person is pushing a lawn mower of mass m = 38 kg and with h = 0.75 m, d = 0.25 m, ℓA = 0...

A person is pushing a lawn mower of mass m = 38 kg and with h = 0.75 m, d = 0.25 m, ℓA = 0.28 m, and ℓB = 0.36 m. Assuming that the force exerted on the lawn mower by the person is completely horizontal, the mass center of the lawn mower is at G, and neglecting the rotational inertia of the wheels, determine the minimum value of this force that causes the rear wheels (labeled A) to lift off the ground. In addition, determine the corresponding acceleration of the mower.