A professor likes to demonstrate centripetal force by swinging a bucket of water in the vertical direction.What is the minimum speed he must swing the bucket at the top of the circle if he is not to get drenched? (Assume that his arm is 1 m long.)
A)1.1 m/s
B)2.1 m/s
C)3.1 m/s
D)4.1 m/s
E)5.1 m/s

Question

Quizplus · Accepted Answer

The minimum speed at the top of the circle can be found using the formula for centripetal force: v = sqrt(g*r), where g is the acceleration due to gravity (9.8 m/s²) and r is the radius (1 m). This gives v = sqrt(9.8*1) = 3.1 m/s.

A Professor Likes to Demonstrate Centripetal Force by Swinging a Bucket