A student places a 1.200 kg block next to a spring of spring constant k=4960N/m. The system rests is on a frictionless horizontal surface (see figure). The horizontal surface at the top of a building. The distance from the horizontal surface to the ground below is 7.00m. The student pushes the block against the spring until it is compressed a distance 0.100m. The block is then released so that is slides off the edge of the building. Final answers must be to the correct number of significant figures (g=9.8066m/s2 ).
a. What is the initial kinetic energy of the object when it loses contact with the spring
b. What is the initial potential energy of the object
c. Use the results of the previous parts and conservation of energy to calculate the speed of the object when it hits the ground below
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