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(a) Find ∫tcos(4πt)dt (4) (b) The platform of a theme park ride oscillates vertically. For the first 75 seconds of the
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(a) Find ∫tcos(4πt)dt (4) (b) The platform of a theme park ride oscillates vertically. For the first 75 seconds of the
(a) Find ∫tcos(4πt)dt (4) (b) The platform of a theme park ride oscillates vertically. For the first 75 seconds of the ride, dtdx=32xtcos(4πt) where x metres is the height of the platform above the ground after time t seconds. At t=0, the height of the platform above the ground is 4 metres. Find the height of the platform after 45 seconds, giving your answer to the nearest centimetre.
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