A boy of mass 30kg is sitting at a distance of 2m from the middle of the seesaw .where should a boy of mass 40kg have to sit to balance the seesaw.
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Answered by
17
it can be solved by law of conservation of energy
P.E. = mgh
=) 30*10*2
=) 600 joules
now mass is 40 kg
but energy remain conserved
600=40*10*h
h = 600/40*10
h=6/4=1.25m
P.E. = mgh
=) 30*10*2
=) 600 joules
now mass is 40 kg
but energy remain conserved
600=40*10*h
h = 600/40*10
h=6/4=1.25m
Answered by
10
It's 1.5 not 1.25m because 6/4=1.5 m
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