What is the magnitude of the centripetal force that must act on an object of mass 1.0 kg to make it move along a circular path of diameter 1.0 m, completing a circle every 1.0 s?
A car with mass 360 kg travels at constant speed along a circular path around a flat roundabout. The radius of the roundabout is 12 m. The car takes a time of 28 s to completely travel around the roundabout.
What is the friction force between the wheels of the car and the surface of the road?
What is the coefficient of static friction for the wheels of the car on the surface of the road?
A spinning disk has a string that holds a small sphere that has a mass of 16 g. The string is suspended from a point at a negligible distance from its center, as shown in the diagram. The disk rotates uniformly around its center with an angular velocity of 24 rad/s. The string makes an angle of with the axis of rotation of the disk.
What is the magnitude of the vertical force exerted on the sphere by the string?
What is the distance between the disk’s axis of rotation and the circular path followed by the sphere?
What is the magnitude of the horizontal force exerted on the sphere by the string?
What is the magnitude of the net force exerted on the sphere by the string?