- #1

mattmannmf

- 172

- 0

angular frequency= 45 rad/sec

period= .139 s

amplitude= 40 cm

Heres the part i can't get but seems so simple...

where is the particle at t= .05 sec?

what is its velocity?

what is its accleration?

what is the maximum speed attained by the particle?

So what i figured on doing is just plugging .05 into my original equation x = 40 cos(45 t + 8) to solve for distance...where t= .05, distance= 39.36...which came out to be wrong for some reason...(all is in cm)

then for the rest i just add a "-w" infront of the equation for velocity

and a "-w^2" for acceleration and then solve when a=0, velocity has a max or min..

any ideas?