For each problem, draw a force diagram for the extended body. Show all torques or turning effects. Identify the possible pivot points.4) A 3.0-meter long uniform plank of mass 60-kg is placed on top of two sawhorses one at each end. A 75-kg painter stands 1.0 m from the left end and a 50-kg painter stands on top of the right end. What upward force does each sawhorse to keep this system in equilibrium exert?Please show all work or otherwise I can't learn it!

4) A 3.0-meter long uniform plank of mass 60-kg is placed on top of two sawhorses one at each end. A 75-kg painter stands 1.0 m from the left end and a 50-kg painter stands on top of the right end. What upward force does each sawhorse to keep this system in equilibrium exert