jimmyjonas

Two satellites are in circular orbits around Jupiter. One, with orbital radius r, makes one revolution every 17 h. The other satellite has orbital radius 4.2r. How long does the second satellite take to make one revolution around Jupiter?

3.A roller coaster has a vertical loop with radius 27.1 m. With what minimum speed should the roller coaster car be moving at the top of the loop so that the passengers do not lose contact with the seats?

6.A child pushes a merry go-round from rest to a final angular speed of 0.46 rev/s with constant angular acceleration. In doing so, the child pushes the merry-go-round 1.3 revolutions. What is the angular acceleration of the merry go-round?