Question

h(m) KE (J) PEgravity (J) PEelastic (J) E

0 ______ _________ _________ __
0.2 ______ _________ __________ ___
0.4 ______ _________ __________ __
A 2.40-kg object is hanging from the end of a vertical spring. The spring constant is 31.0 N/m. The object is pulled 0.200 m downward and released from rest. Complete the following table by calculating the translational kinetic energy, the gravitational potential energy, the elastic potential energy, and the total mechanical energy E for each of the vertical positions listed. The vertical positions h indicate distances above the point of release, where h = 0 m.

Answer 1

what is your question on this. It is hardly difficult to calculate the PE at the start, and then at other positions, KE=initialPE-currentPE

Answer 2

how do you calculate PE? mgh?

Answer 3

PE=1/2 k x^2

Answer 4

that is spring PE. Gravity PE is mgx

Answer 5

i tried that... (1/2)(31)(.2)^2?

Answer 6

isn't x the displacement?

Answer 7

x is position, or displacement, from the starting position