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**1. Homework Statement**

A 1.30 kg mass on a spring oscilates horizontally with little friction according to the following equation: x = 0.070cos(2.50t), where x is in meters and t in seconds.

1) Find the maximum energy stored in the spring during an oscillation.

2) Find the maximum velocity of the mass.

**2. Homework Equations**

I have no clue how to do this problem. Can someone show me step by step how to do it.

**3. The Attempt at a Solution**