Question Number 103652 by smartsmith459@gmail.com last updated on 16/Jul/20
Commented by Worm_Tail last updated on 16/Jul/20
$$\left.\mathrm{1}\right)\:\:\:\:\alpha=\frac{\frac{\mathrm{20000}}{\mathrm{60}}−\mathrm{0}}{\mathrm{30}}=\frac{\mathrm{20000}}{\mathrm{1800}}=\mathrm{11}.\mathrm{11}{rps} \\ $$$$\left.\mathrm{2}\right)\:\:\:\theta=\omega_{\mathrm{0}} {t}+\mathrm{0}.\mathrm{5}\alpha{t}^{\mathrm{2}} \\ $$$$\:\:\:\:\theta=\left(\mathrm{0}\right)\left(\mathrm{30}\right)+\mathrm{0}.\mathrm{5}\left(\mathrm{11}.\mathrm{111}\right)\left(\mathrm{30}\right)^{\mathrm{2}} \\ $$$$\:\:\:\theta=\mathrm{5000}{rad} \\ $$$$\:\:\:\:\:\:{revolutn}=\frac{\mathrm{5000}}{\mathrm{2}\pi}{rev} \\ $$