# honors physics

A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of this spring/mass sytem is 2.1 J. What is the elastic potential energy of the system when the 3.2 kg block is replaced by a 5.3 kg block?

1. 👍 0
2. 👎 0
3. 👁 939
1. find k for the initial block.
Weight= kx when
2.1J=1/2 kx^2 or

mg=kx and
4.2J=kx^2 or
4.2=mg*x solve for x
know, knowing x, solve for k.

replace the mass, find new x.
PE= 1/2 k (newx)^2

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Physics

A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of this spring/mass sytem is 2.2 J. What is the elastic potential energy of the system when the

asked by Mary on April 2, 2007
2. ### physics

A 2.8-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of the spring/mass system is 1.2 J. What is the elastic potential energy of the system when the

asked by Lynn on January 26, 2010
3. ### college

A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling and has an elastic potential energy of 1.8 J. What is the elastic potential energy of the system when the 3.2 kg block is

4. ### Physics

VERTICAL SPRING A spring of negligible mass, spring constant k = 89 N/m, and natural length l = 1.4 m is hanging vertically. This is shown in the left figure below where the spring is neither stretched nor compressed. In the

asked by Megan on October 16, 2013
5. ### Physics

Consider the figure above, where a rigid beam of negligible mass and 10 m long is supported by a cable attached to a spring. When NO block is hung from the beam, the length L (cable-spring) is equal to 5 m. Assume that immediately

asked by Anonymous on August 1, 2015
6. ### Physics Help!!!! Please check

We had worked this one out before but due to my bad note i really don't understand what is going on in the question. Following the question I will post what I wrote done. Please help me make some sense of it. A 3.2 kg block is

asked by Mary on May 8, 2007
7. ### physics

The drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first spring, whereas a W = 4.20-N block hangs from the second spring. A block of unknown weight hangs from the third spring. From the

A spring of negligible mass, spring constant k = 82 N/m, and natural length l = 1.2 m is hanging vertically. This is shown in the left side where the spring is neither stretched nor compressed. In the central one, a block of mass

asked by ss01 on October 15, 2013
9. ### Physics to be solved

The block in the figure below lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 55 N/m. Initially, the spring is at its relaxed length and the block is stationary at

asked by Rioster2012 on October 26, 2012
10. ### physics help needed very urgent !!!

The block in the figure below lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 55 N/m. Initially, the spring is at its relaxed length and the block is stationary at

asked by helper on October 26, 2012

More Similar Questions