When a wood shelf of mass 5.0 kg is fastened inside a slot in a vertical support as shown in Fig. A, the support exerts a torque on the shelf. (a) Draw a free-body diagram for the shelf, assuming three vertical forces (two exerted by the support slot — ex

When a wood shelf of mass 5.0 kg is fastened inside a slot in a vertical support as shown in Fig. A, the support exerts a torque on the shelf. (a) Draw a free-body diagram for the shelf, assuming three vertical forces (two exerted by the support slot — ex