Posted by **Cory ** on Thursday, December 10, 2009 at 6:53pm.

A vertical spring (k = 1040 N/m) is compressed a distance of 11.6 cm. A 47.9 g mass is placed on the spring, then released so the mass flies upward. When the mass is 120 cm above the spring, what is the speed of the mass?

- physics -
**drwls**, Thursday, December 10, 2009 at 7:25pm
Let Y be the elevation from the compressed position. When released and after reaching elevation Y = 0.12 m, the kinetic energy is the initial spring potential energy minus the gain ib gravitational potential energy.

KE = (PE)spring - (PE)gravity

(1/2)(0.0479 kg)V^2 = (1/2)k(0.116m)^2 - (0.0479)(9.8 m/s^2)(0.12 m)

Solve for V

## Answer This Question

## Related Questions

- Physics - A mass of 2.2kg is placed on a stiff vertical spring which has a ...
- Physics - A 2.00kg mass is hanging on a vertical compressed spring 1.0 m above ...
- physics - A 1kg mass is suspended from a vertical spring with a spring constant ...
- physics - A 0.46 kg mass is attached to a spring with a spring constant of 145 N...
- Physics - A crate of mass 0.812 kg is placed on a rough incline of angle 35.3 ...
- Physics - A crate of mass 0.812 kg is placed on a rough incline of angle 35.3 ...
- PHYSICS/MATH - A mass and spring are arranged on a horizontal, frictionless ...
- Physics - A mass and spring are arranged on a horizontal, frictionless table as ...
- physics - A block of ice of mass 4.10 kg is placed against a horizontal spring ...
- Physics HELP PLZ :( - A 2.0 kg mass is placed in front of a spring (K = 40 N/m...

More Related Questions