A 0.20-kg object attached to the end of a string swings in a vertical circle (radius = 80 cm). At the top of the circle the speed of the object is 4.5 m/s. What is the magnitude of the tension in the string at this position?

A. 7.0 N
B. 2.0 N
C. 3.1 N
D. 5.1 N
E. 6.6 N


Answer: C

Physics & Space Science

You might also like to view...

Series/Parallel Circuits: A 22-A current flows into a parallel combination of 4.0-?, 6.0-?, and 12-? resistors. What current flows through the 12-? resistor?

A. 18 A B. 11 A C. 7.3 A D. 3.7 A

Physics & Space Science

Assume a gram of a substance marketed as "Pure Energy" is annihilated by a gram of a second substance "Anti-Pure Energy." How long would the energy released power a city which uses 109 watts of power?

A. 40 hrs B. 25 hrs C. 50 hrs D. 65 hrs E. 50000 hrs

Physics & Space Science

Sound vibrations with frequencies less than 20 Hz are called

A) infrasonics. B) ultrasonics. C) supersonics. D) infrared. E) megasonics.

Physics & Space Science

How many tidal bulges "move" around Earth daily?

a. Two b. Six c. One d. Four

Physics & Space Science