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September 19, 2014

September 19, 2014

Posted by **anonymous** on Friday, November 1, 2013 at 9:21am.

What is the distance L′ between the two skaters when the skater of mass m1 has moved a distance l? (in meters)

- physics(IMPORTANT) -
**bobpursley**, Friday, November 1, 2013 at 9:41amThe cneter of gravity has to remain at the same point.

measuring from the center of gravity point, then if d is the distance the m1 is frm the cg, then

50d=70(8-d) and after the jerk, then we know

50(d-2)=70(L'-(d-2)

you have two equations, two unknowns

solve the first equation for d

50d=560-70d

120d=560

d= 4 2/3

now the second equation..

50(d-2)=70(L'-d+2)

50(2 2/3)=70L' -70(4 2/3-2)

L'= 120(2 2/3)/70=4.7 m check my math, done in my head.

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