Physics, 01.07.2019 00:30 cesaricastorena

The displacement of an oscillating mass is given by x(t) = 20 cos( 5 t ). at time t = 0.5π s, what is the acceleration of the mass in m/s2?

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The displacement of an oscillating mass is given by x(t) = 20 cos( 5 t ). at time t = 0.5π s, what i...