You hold a softball with a weight of 1.80 N in your hand as shown in the figure. Your arm is moving, but at the instant shown, your arm is horizontal. Consider your forearm and hand to be a uniform rod with a mass of 1.85 kg and the distance between your elbow joint and the ball in your hand is 2L = 29.5 cm. Your biceps exerts an upward, vertical force of 12.5 N on your forearm and is attached a distance of d = 2.80 cm from your elbow. Biceps Mg L L- mg (a) Using your elbow joint as the axis of rotation, determine the magnitude of the net torque acting about your elbow due to the weight of your forearm/hand, the weight of the ball, and the force applied by your bicep. Nm (b) In which direction will your forearm and hand rotate, given the signed value of the net torque calculated in part (a)? O no rotation O clockwise O counterclockwise MY NOTES A meter stick has a mass of 0.24 kg and balances at its center. When a small chain is suspended from one end, the balance point moves 27.0 cm toward the end with the chain. Determine the mass .of.the.chain... Enter a number. onvenient place for the origin of the coordinate system. See if you can write an expression for the center of mass of the two objects in terms of known quantities and the mass of the chain and then solve for the mass of the chain. g Supporting Materials Physical Constants