If anya decides to make the star twice as massive, and not change the length of any crossbar or the location of any object, what does she have to do with the mass of the smiley face to keep the mobile in perfect balance? note that she may have to change masses of other objects to keep the entire structure balanced.
Answers
Answer from: Quest
can be answered using momentum.
momentum = p
p1= mass1 * velocity1
p1 = p2
therefore
p1 = 6kg * 4m/s
p1 = 24kgm/s
p2=m2 * v2
24 kgm/s = 7kg * v2
v2 = 24 kgm/s / 7kg
v2= 3.42 m/s
Answer from: Quest
Uncle grandma
Answer from: Quest
The answer is c hope this
Answer from: Quest
that would be because of both gravity and friction. so c
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