Can someone please help me with this question and show me all working so I can follow along

For safety reasons. power tools such as circular saws have a retractable guard [plastic or metal} that covers most of the blade {as seen in the figure below]. This guard is designed to prevent the user [or bystanders] from accidentally being cut by the blade both during use and when the power trigger is let go. Safety features such as these are particularly important when the user lets go of the trigger. as most users will immediately put the saw on a bench or on the ground, at which time the blade is still turning. This spin down ofthe blade is needed so thatthe internal mechanisms of the powertool are not damaged by a sudden stop. To prove why this safety guard is now a mandatory feature on all circular saw power tools, calculate how long it takes the blade to stop spinning completely where a typical angular velocity of the blade at the time of letting go of the trigger is 5500 revolutions per minute (rpm) and the angular deceleration rate of the blade is 60 rad/s-. Give your answer to 2 significant figures. Tips: Use g = 9.8 m/s ; check that your units are in base SI units before using them in your calculations; round only at the last steps; and only input a numerical value into the question's Quiz submission box (do not include units, as they are provided for you). S