A spring (70N/m ) has an equilibrium length of 1.00 m. The spring is compressed

Question

A spring (70N/m ) has an equilibrium length of 1.00 m. The spring is compressed to a length of 0.50 m and a mass of 2.2kg is placed at its free end on a frictionless slope which makes an angle of 41 ? with respect to the horizontal. The spring is then released.

Part A

If the mass is not attached to the spring, how far up the slope from the compressed point will the mass move before coming to rest?

Part B

If the mass is attached to the spring, how far up the slope from the compressed point will the mass move before coming to rest?

Part C

Now the incline has a coefficient of kinetic friction ?k. If the block, attached to the spring, is observed to stop just as it reaches the spring's equilibrium position, what is the coefficient of friction ?k?

Explanation / Answer

The spring contains 70N/m * (1.00m - 0.50m) of compression energy.
This can lift a 2.2kg mass how high?
Now, at an angle of 41

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