Centripetal Acceleration and Forces What actually causes

Centripetal Acceleration and Forces
What actually causes centripetal acceleration?
Linear motion
Circular Motion
What is centripetal force?
What kind of forces cause centripetal acceleration?
What will happen if the string is cut?
Eg1) A 2.5kg mass swings in a vertical circle on a 1.2m long
rope at a constant speed of 15m/s. What is the tension in the
rope at the top and bottom of the swing?
Eg2) What is the period of revolution if the same mass is spun
in a horizontal circle at an angle of 15o?
Eg3)What is the speed of the Earth in it’s orbit around the
sun?
Eg4) Europa, one of the moons of Jupiter orbits the planet
every 3.55 Earth days at a speed of 9.2x106 m/s. What is
the radius of this moon’s orbit?