A 54 kg person on a merry-go-round is traveling in a circle with a radius of 2 m at a speed of 4 m/s. (a) What acceleration does the person experience? _______ m/s2 (b) What is the net horizontal force? _______ N (c) How does it compare with the person's weight? Fhor.,net / W = _________

A race car rounds a curve at 59 m/s. The radius of the curve is 417 m, and the car's mass is 620 kg. (Assume the car's speed remains constant. Take the radially inward direction to be positive. Indicate the direction with the sign of your answer.) (a) What is the car's (centripetal) acceleration? _______________m/s2What is it in g's? __________g(b) What is the centripetal force acting on the car? ______________N

A cellphone steps into a “Graviton” and stands up against the frictionalwall. The Gravitron starts to spin and the floor lowers below the cellphone butthe cellphone does not accelerate downwards, she has no net force vertically. Assume:● The radius of the Gravitron is 7.5 m● The cellphone has a tangential velocityof 15 m/s● The man has mass M Determine: Determine the minimum coe cient of static friction between the wall and the cellphone.

A plane in a holding pattern flies at a speed of 250 m/s in a circle with a radius of 22 km.  a) Determine the banking angle of the plane (measured from the horizontal) that would cause the passengers not to need a friction force to stay in their seats.  Use g = 10 m/s/s.  Enter units as degrees.   b) What would be the apparent weight of a 70 kg person in the plane?  Use g = 10 N/kg.