Lesson: Sources of Centripetal Force
In this lesson, we will learn how to identify the physical causes of centripetal forces on objects and to identify whether such forces have position-dependent components.
Sample Question Videos
Worksheet: 17 Questions • 2 Videos
A body with a mass of 0.17 kg is attached to a massless vertical spring with an equilibrium length of 2.1 cm. The body extends the spring by 2.6 cm. The body and the spring are then placed on a frictionless horizontal surface and the spring returns to its equilibrium length. The end of the spring not touching the body is fixed and the spring plus the body are rotated steadily about this point at 2.4 rev/s. How much does the spring extend during this rotation? Assume that the mass of the spring is negligible.
A ball of mass 1.3 kg at the end of a 1.5-m string swings in a vertical circle. At its lowest point the ball is moving with a speed of 9.5 m/s.
What is the speed of the ball at the top of its circular path?
What is the magnitude of the tension in the string when the ball is at the top of its circular?
What is the magnitude of the tension in the string when the ball is at the bottom of its circular path?
An airplane flying at 120.0 m/s turns by banking at a angle. The airplane’s mass is kg. Use a value of 9.8 m/s2 for the acceleration due to gravity.
What is the magnitude of the lift force?
What is the radius of the turn?