Question
It takes 6.7 J of work to stretch a spring 4.4 cm from its unstressed (relaxed) length.
How much work (in J) is needed to compress the spring an additional 3.8 cm?
I found the spring potential energy to be 6.7 J, and the spring constant to be 6921.5. I thought that plugging those in the the spring potential energy equation would give me the right answer, but it's not. Help?
How much work (in J) is needed to compress the spring an additional 3.8 cm?
I found the spring potential energy to be 6.7 J, and the spring constant to be 6921.5. I thought that plugging those in the the spring potential energy equation would give me the right answer, but it's not. Help?
Answers
Henry
Work = F*d = 6.7 J.
F * 0.044 = 6.7
F = 152.3 N
F/(0.038+0.044) = 152.3/0.044
F/0.082 = 3461.36
F = 283.83 N.
Work = F*d = 283.83 * 0.082 = 23.3 J.
23.3 - 6.7 = 16.6 J.
F * 0.044 = 6.7
F = 152.3 N
F/(0.038+0.044) = 152.3/0.044
F/0.082 = 3461.36
F = 283.83 N.
Work = F*d = 283.83 * 0.082 = 23.3 J.
23.3 - 6.7 = 16.6 J.
Bill
Your answer is wrong