Step-by-step explanation:seesaw consists of a plank 4.5m long which is supported by a pivot at its center and rotates in a vertical plane above the pivot if the height of the pivot pillar above the ground is I'm through what maximum angle can seesaw beam rotate
n = 17S = (n - 2) x 180S = (17 - 2) x 180S = 15 x 180S = 2700