A) the side the girl is sitting on will til it downward B) it is impossible to p

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A) the side the girl is sitting on will til it downward B) it is impossible to predict without knowing additional information. C) the side the boy is sitting on will tilt downward D) nothing; the seesaw will remained balanced previous 12 of 16n Prelecture Concept Question 10.03 Part A A heavy boy and a lightweight girl are balanced on a massless seosaw The boy moves backward, increasing his distance from the pivot point. What happens to the seesaw? O The side the girl is sitting on will tit downward ) It is impossible to predict without knowing additional information. O The side the boy is sitting on will tit downward The side the boy is sitting on will tilt downward Nothing: the seesaw will remain balanced Submit My Answers Give Up Continue

Explanation / Answer

Torque due to weight of girl or boy on seesaw is,

t=mgr, r is the distnace of the mass from the pivot.

If the seasaw is balanced, then the torque due to each of the children is equal.

m1gr1=m2gr2

m1rl=m2r2

if the distance of the boy is increased, then the torque due to his weight increases, and then the seesaw will be under unbalance. Now the seesaw tilt down towards boy side. option (c) is correct.

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