Each of the go-cart’s front wheels weighs 5 lb and has a moment of inertia of 0.01 slug-ft...

Each of the go-cart’s front wheels weighs 5 lb and has a moment of inertia of 0.01 slug-ft2. The two rear wheels and rear axle form a single rigid body weighing 40 lb and having a moment of inertia of 0.1 slug-ft2. The total weight of the go-cart and driver is 240 lb. (The location of the center of mass of the go-cart and driver, not including the front wheels or the rear wheels and rear axle, is shown.) If the engine exerts a torque of 12 ft-lb on the rear axle, what is the go-cart’s acceleration?