A rod ABC rotating at 20rpm about a vertical axis through point A supports a 400N ball at its lower end. It is fixed in position by the rod BD as shown in the figure. Neglecting the weights of rods AC and BD, compute the force P in rod BD. Identify if this force is in tension or compression. At what rpm will this force be zero? Draw FBD of the rod AC during the motion of the system. A 0.60m 30 0.40m D

Sketch a free body diagram, Apply the principle of work and energy to the system to find the tension in the rope. Please use solve with the method provided only and apply the relevant kinematic equation(s) Keep final answer in lb*ft/s.

I need a clear and fast answer within 20 minutes. Thank you

Torsional springs provide a simple propulsion mechanism for toy cars. When the rear wheels are rotated asif the car were moving backward, they cause a torsional spring (with one end attached to the axle and the other to thebody of the car) to wind up and store energy. Therefore, a simple way to charge the spring is to place the car onto asurface and to pull it backward, making sure that the wheels roll without slipping. Note that the torsional spring canonly be wound by pulling the car backward; that is, the forward motion of the car unwinds the spring.Let the weight of the car (body and wheels) be W = 5 oz, the weight of each of the wheels be Ww= 0.15 oz, and theradius of the wheels be r = 0.25 in., where the wheels roll without slip and can be treated as uniform disks. Neglectingfriction internal to the car and letting the car’s torsional spring be linear with constant kt= 0.0002 ft-lb/rad, determinethe maximum speed achieved by the car if it is released from rest after pulling it…