- #1
ehabmozart
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Homework Statement
At a waterpark, sleds with riders are sent along a slippery,
horizontal surface by the release of a large compressed spring. The
spring with force constant and negligible mass
rests on the frictionless horizontal surface. One end is in contact
with a stationary wall. A sled and rider with total mass 70.0 kg are
pushed against the other end, compressing the spring 0.375 m. The
sled is then released with zero initial velocity. What is the sled’s
speed when the spring (a) returns to its uncompressed length and
(b) is still compressed 0.200 m?
Homework Equations
Using Work Energy THeorem
The Attempt at a Solution
For part b) I attemted the equation ... .5 K (x)^2 = 0.5 m (v^2) and i got an answer of 1.5 but the book attempt was different... they used it with the x of A and got the answer of 2.4 m/s ... What my problem?? Kindly Clarify... THANKS A LOT!