QUESTION

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6a The pendulum at the Houston Museum of Natural Science has an amplitude of $1.5 \mathrm{~m}$ and a period of $T=8 \mathrm{~s}$. The position of the bob is therefore described by: $x=1.5 \sin \left(\frac{2 \pi}{T} t\right)$. Enter a formula for the velocity versus time in terms of $t$. Do not enter " $v=$ ", just put the formula. $t$ should be the only variable since you have values for everything else. Type "pl" for 3.14 . Denote multiplication with *, Make sure the preview matches your intended answer before you submit. NOTE: You have to enter the expression using whole numbers and "pi". Enter math expression here 14. $6 \mathrm{~b}$ Enter a formula for the acceleration versus time in terms of $t$. NOTE: You have to enter the expression using whole numbers and "pi". 1 point Enter math expression here

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