1. The picture shows a heavy ball held in the palm of a hand. The mass of the ball M is 7.5 kg. The lower arm is horizontal and is held by the force from the bicep muscle in the vertical upper arm. Given that the mass of Biceps the lower arm is 2.0 kg, what is the magnitude of (a) the force of the biceps muscle on the lower arm and (b) the force between the bony structures at the elbow Elbow contact contact point? point 4.0 cm Lower arm 15 cm- 33 cm (forearm plus hand) center Draw a free body diagram to indicate all the forces on the lower arm. And write down where is the pivot of mass point when you calculate the torque in each part.

1. The picture shows a heavy ball held in the palm of a hand. The mass of the ball M is 7.5 kg. The lower arm is horizontal and is held by the force from the bicep muscle in the vertical upper arm. Given that the mass of Biceps the lower arm is 2.0 kg, what is the magnitude of (a) the force of the biceps muscle on the lower arm and (b) the force between the bony structures at the elbow Elbow contact contact point? point 4.0 cm Lower arm 15 cm- 33 cm (forearm plus hand) center Draw a free body diagram to indicate all the forces on the lower arm. And write down where is the pivot of mass point when you calculate the torque in each part.