Came across this question a while ago, I keep struggling to fully understand the

Question

Came across this question a while ago, I keep struggling to fully understand the answers though.
Please take the explanations and math slow while using equations and laws (list them).

A spring with k = 170 N/m is top of a frictionless incline (incline angle 40 deg), which is at it's relaxed length. A 2.0 kg canister is pushed against the spring until the springs compressed 0.200 m and released from the rest.

A) What is the energy stored in spring (before canister release)?
B) What is the speed of the canister at the instant the sprring returns to its relaxed length?
C) What is the speed of the canister when reaching the lower end of the incline?

Explanation / Answer

SImilar probeem

In figure 8-42, a spring with k = 169 N/m is at the topof a frictionless incline of angle ? = 34.6

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