A fan blade initially at rest rotates with a constant accele

   A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s squared.  What is the time interval required for it to reach a 4.2 rad displacement after starting from rest?

Solution

we can use the kinematic equation = 0+ 0t + 1/2 t2 to solve for thetime it takes to reach a certain displacement, so....
4.2 = 0 + 0*t + 1/2 .025 t2
336 = t2
t = 18.33 sec
message me if any of this is unclear
t = 18.33 sec
message me if any of this is unclear

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