a uniform metal rod of length 80cm is suspended by a string at a point 22cm from the end. When a weight of 15N hangs from a point 13cm from the end, the rod balances in a horizontal position as shown in the diagram. How far from the string is the point where the weight of the metal rod acts

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)