A 4.0-kg mass on the end of a string rotates in a circular motion on a horizontal frictionless table. The mass has a constant speed of 2.0 m/s and the radius of the circle is 0.80 m. What is the magnitude of the resultant force acting on the mass?

a. 39 N
b. 20 N
c. 44 N
d. 0 N
e. 30 N


b

Physics & Space Science

You might also like to view...

The dominant trigger of star formation in our Galaxy is supernova explosions

Indicate whether the statement is true or false

Physics & Space Science

Kepler's Laws: Two moons orbit a planet in circular orbits. Moon A has orbital radius R, and moon B has orbital radius 4R. Moon A takes 20 days to complete one orbit. How long does it take moon B to complete an orbit?

A. 20 days B. 80 days C. 160 days D. 320 days E. 5 days

Physics & Space Science

The standard exam page is 8.50 inches by 11.0 inches. Its area in cm2 is

a. 19.5. b. 36.8. c. 93.5. d. 237. e. 603.

Physics & Space Science

Why is guayule particularly useful? Explain

What will be an ideal response?

Physics & Space Science