1. A guy is doing push ups, the length of the guy is 1.5 m, centre of mass is 0.9 m from the legs. He stops during the push up and holds the position in such a manner that his bent arm forms a 90 degree angle. Mass of the man is 50 kg. Find the force of the floor acting on both hands
2. A person lying on a plank with both ends on scales, with length 2 m and unknown centre of mass. His head side scale read F1=349 N and his foot side scaled reads F2=588 N. Mass of plank is negligible. Calculate the mass of the person and the centre of mass.
3. Draw a graph comparing centripetal acceleration vs angular velocity. (Just have to draw an exponential graph, right side half of an upward facing parabola)