Posted by **Josh** on Saturday, January 11, 2014 at 6:44pm.

Two uniform solid spheres have the same mass of 3 kg, but one has a radius of 0.25 m while the other has a radius of 0.8 m. Each can rotate about an axis through its center.

(a) What is the magnitude τ of the torque required to bring the smaller sphere from rest to an angular speed of 300 rad/s in 15 s?

N·m

(b) What is the magnitude F of the force that must be applied tangentially at the sphere's equator to provide that torque?

N

(c) What is the corresponding value of τ for the larger sphere?

N·m

(d) What is the corresponding value of F for the larger sphere?

N

## Answer This Question

## Related Questions

- PHYSICS - Calculate the angular momentum of a solid uniform sphere with a radius...
- Physics - Calculate the angular momentum and kinetic energy of a solid uniform ...
- Physics - A uniform disk of radius 0.485 m and unknown mass is constrained to ...
- Physics - Two spheres are cut from a certain uniform rock.One has radius 4.50 cm...
- physics - The uniform solid block in Fig. 11-36 has a mass of M = 5.60 kg and ...
- physics concepts (please check over my work) - A uniform cyclinder made of lead ...
- physics - A curcial part of a piece of machinery starts as a flat uniform ...
- Phy 231 - A baton consists of a nearly massless rod of length L and two spheres ...
- Physics - Two wheels have the same mass and radius of 4.0 kg and 0.35 m, ...
- College Physics - A bowling ball (mass = 4.4 kg, radius = 0.11 m) and a billiard...

More Related Questions