Answer to Question #280507 in Physics for Faith

Question #280507

A glider attached to one end of a string oscillates given by the displacement function . What is the velocity of the mass after 1.4 seconds?

Expert's answer

Given that the displacement function is $x(t)=A\sin(\omega t),$ the velocity is the first derivative by time:

v(t)=\omega A\cos(\omega t)=\omega A\cos(1.4\omega ).

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