Question

7) Alice and Bob are sitting on opposite ends of a seesaw of length 1.8 m. Alice is on the left side and has a mass of 65 kg; Bob is on the right and has mass 81 kg. The seesaw itself has negligible mass, a) Find the position of the center of mass of the system using a coordinate system in which Alice’s position is x = 0 and x grows rightwards. b) Redo the calculation using a coordinate system in which Bob’s position is x = 0 and x grows rightwards (so that Alice has a negative position). c) Make a diagram indicating where Alice, Bob, and the center of mass each are, showing how the two different numbers you got for a) and b) are represent in fact the same result.

Answer 1