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While moving out of her dorm room, Bridget carries a 12-kg box to her car,holding it in both arms. a) How much force must be exerted by each of herarms to support the box? b)How will this force change
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28 votes
28 votes
While moving out of her dorm room, Bridget carries a 12-kg box to her car,holding it in both arms. a) How much force must be exerted by each of herarms to support the box? b)How will this force change if Bridget holds thebox with only one arm?

User Nert
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1 Answer

20 votes
20 votes

weight = mass x gravity

mass = 12 kg

gravity = 9.8 m/s^2

Weight = 12 x 9.8 = 117.6 N

The force (F) needed to support the box:

F = W

FF= = 117.6 N

Divide by 2 arms:

117.6 / 2= 58.8 N

If she holds with one arm

117.6 N

a) 58.8 N

b) 117.6 N

User Seekeer
by
2.7k points
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