Centripetal Force

Question 1

What is centripetal force

Answer 1

A CENTER SEEKING FORCE IN A CLOSED PATH.

trajectory of an object travels in a closed path about a point due to a force pulling it in the direction of the point.

Question 2

Newton’s “Principia”

Answer 2

centripetal force is that by which bodies are drawn or impelled towards a point as to a center

Question 3

Centrifugal force

Answer 3

INERTIA IN DISGUISE

-object will fly tangentially, not radially

Question 4

Describe centripetal force seen in a hammer throw

Answer 4

spin hammer in a circle; athlete pulls in (CF) and acts as axis of rotation; hammer pulls outward because it wants to go in a straight line not in a circle; upon release, hammer will go tangentially and straight.

Question 5

Describe the relationship between angular velocity and centripetal force

Answer 5

2x angular velocity (spin) : 4x the CF (inward pull)

Question 6

Why do speed skaters lean into curve?

Answer 6

athlete uses outward push against the ice and provides CF