joey is running an experiment with a mass on a spring. Joey models the height of the mass above the table heisworkingonusingtheequation h(t)=6.85cos(3.42t) +9,where the height is   in inches and the time,t, is in seconds since he let the mass free. How many seconds, to the nearest tenth, will it take for the mass to return to its original position?

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.