An ice cube of mass 50.0 can slide without friction up and down a 25.0 slope. Th

Question

An ice cube of mass 50.0 can slide without friction up and down a 25.0 slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 0.100m. The spring constant is 25.0N/m. Consider only the initial and final situations. Which of the following apply? (you can pick all if all apply).

-Kinetic energy has changed.
-Gravitational potential energy has changed.
-Spring potential energy has changed.
-Work by external forces on the system must be considered.
-Thermal energy of the system has changed.

Explanation / Answer

-Gravitational potential energy has changed. -Spring potential energy has changed. -Work by external forces on the system must be considered.

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