Question

1) The drawing below shows a sulfur dioxide molecule. It consists of two oxygen atoms and a sulfur atom. The sulfur atom is twice as massive as the oxygen atoms. The distance between the oxygen atoms and the sulfur atom is 0.143 nm, and the angle between the y axis and the direction to each oxygen atom is 60o . Using this information, find the x and y coordinates of the center of mass of the molecule.

2) Two blocks are placed at the ends of a horizontal board as shown. The board does not rotate. Find the mass of the board. (3 points) Also find the upward normal force that the support exerts on the board. Distance to center is .6m, the block 1 is 12kg, block 2 is 4kg, distance from the axis of the board to block 2 is 1.4m.

3) The drawing below shows a person doing push-ups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position. Express your answers in terms of the person's weight, ??. Distance from feet to center is .84m, distance from center to hands is .41m

Answer 1