Centripetal Forces Video Lessons

Video Thumbnail

Concept

Problem: Two wires are tied to the 3.0 kg sphere shown in the figure. (Figure 1) The sphere revolves in a horizontal circle at constant speed.a) For what speed is the tension the same in both wires?Express your answer to two significant figures and include the appropriate units.b) What is the tension?Express your answer to two significant figures and include the appropriate units.

FREE Expert Solution

Net centripetal force:

FC=mv2r

Consider the free body diagram:

a)

Equating the horizontal forces:

T cos (30°) + T cos (60°) = mv2/r

Equating the vertical forces:

T sin (30°) + T sin (60°) = mg

81% (170 ratings)
View Complete Written Solution
Problem Details

Two wires are tied to the 3.0 kg sphere shown in the figure. (Figure 1) The sphere revolves in a horizontal circle at constant speed.

a) For what speed is the tension the same in both wires?

Express your answer to two significant figures and include the appropriate units.

b) What is the tension?

Express your answer to two significant figures and include the appropriate units.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Centripetal Forces concept. You can view video lessons to learn Centripetal Forces. Or if you need more Centripetal Forces practice, you can also practice Centripetal Forces practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Soldatenko's class at Los Angeles Pierce College.