Answer:
The distance Abhinav should be seated from the fulcrum in order to balance the seesaw is 2.57 cm
Step-by-step explanation:
For mechanical advantage of a seesaw, we have
Work done by Deepta = Work done by Abhinav
Weight of Deepta × Distance of Deepta from fulcrum = Weight of Abhinav × Distance of Abhinav from fulcrum
The given information are;
The weight of Deepta = 450 N
The weight of Abhinav = 350 N
The distance of Deepta from the fulcrum = 2 cm = 0.02 m
The distance of Abhinav from the fulcrum = X
Which gives;
450 × 0.02 = 350 × X
X = 450 × 0.02/350 = 0.0257 m = 2.57 cm
Therefore, Abhinav should be seated at 2.57 cm from the fulcrum in order to balance the seesaw.