Posted by Mark on Sunday, February 27, 2011 at 12:39pm.
If a masss of 65kg is dropped 4.3m onto a spring with a stiffness coefficient of 6.2x10^4 n/m, how far is the spring depressed?

physics  drwls, Sunday, February 27, 2011 at 12:42pm
M g (H +x) = (1/2)kx^2
Solve for x.
H = 4.3 m
k is the spring constant
M is the mass

physics  Mark, Sunday, February 27, 2011 at 1:10pm
Thanks

physics  drwls, Sunday, February 27, 2011 at 1:15pm
You're welcome.
They may want you to solve it without the x on the left side. That will give you nearly the same answer, and make solving easier, but it will be wrong. Gravity continues to act as the spring is compressed.

physics  hollie, Friday, May 15, 2015 at 12:16pm
how much force is required to accelerate an 8.00 kg mass at 15.00 m/s2?
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