Posted by **Lauren** on Friday, October 21, 2011 at 10:46pm.

A 2.50 mass is pushed against a horizontal spring of force constant 26.0 on a frictionless air table. The spring is attached to the tabletop, and the mass is not attached to the spring in any way. When the spring has been compressed enough to store 15.0 of potential energy in it, the mass is suddenly released from rest.

a. Find the greatest speed the mass reaches?

b. What is the greatest acceleration of the mass?

- Physics -
**Lizzy**, Wednesday, December 9, 2015 at 7:02pm
The potential energy of the block equals the kinetic energy of the block, so:

1/2kx^2=1/2mv^2

Because it gives you the potential energy already, we can find the velocity.

15.0J=1/2(2.50kg)v^2

v=3.46m/s

I can't help you with the second part, though. Sorry!

## Answer This Question

## Related Questions

- Physics - Need help on part B! A 2.50 mass is pushed against a horizontal spring...
- 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 new type of spring is found where the spring force F is given by F=-...
- PHYSICS - a 0.1 kg mass is suspended at rest from a spring near the Earth's ...
- physics - a 0.1 kg mass is suspended at rest from a spring near the Earth's ...
- physics - If a 0.1 kg mass is suspended at rest from a spring near the Earth's ...
- Physics - A 0.473 kg mass is attached to a spring with a spring constant 110 N/m...
- Physics - Block A of mass 4.0 kg is on a horizontal, frictionless tabletop and ...
- Physics - A block of mass M=6 kg and initial velocity v=0.8m/s slides on a ...

More Related Questions