I need help with these please!

1. A kid and his mom with a total mass of 125 kg are riding the merry-go-round that is spinning 5 m/s with a centripetal force of 625 N. How far from the center of the merry-go-round are they? 2. A toy top with an unknown mass is traveling 7.75 m/s in circular motion around a 1.5 m radius with a centripetal force of 11 N. Find the mass of the top.1. Calculate the amount of torque generated from tightening a bolt with a force of 15 N at a radius of 0.09m? 2. Using the image below, if there is 450 N of force being applied to a bar that can pivot, what is the torque if the radius is 1.5 m and it opens at 30. 3. Determine the angular momentum of a 97 kg person spinning on a merry-goround at a velocity of 2.5m/s with a radius of 0.18 m. 1. If you are driving in a car and you turn right, why does your body move to the left? 2. Why is it more difficult to open a door closer to the hinge? 3. Explain the difference between spin and orbit and give an example. 4. You are spinning a string with a ball attached at the end above your head with constant speed. If you decide to let go, what will happen? 1. A275 kg toy airplane is hanging from the ceiling fan and is spinning at a velocity of 3 mls. The fan blade is 2.5 m long. a. What is the centripetal acceleration of the toy airplane? b. What is the centripetal force