Consider the following figure. (Let m 1 be the mass of the child, and m 2 be the

Question

Consider the following figure. (Let

m1

be the mass of the child, and

m2

be the mass of the scale.)

(a) Which of the following diagrams correctly represents the free body diagram for the child?

Which of the following diagrams correctly represents the free body diagram for the child plus scale?

(b) What is the mass of the child and basket if a scale reading of 103 N is observed?
3 kg

(c) What is the tension

T1

in the cord attaching the child to the scale? (Enter the magnitude only.)
4 N

(d) What is the tension

T2

in the cord attaching the scale to the ceiling, if the scale has a mass of 0.800 kg? (Enter the magnitude only.)
5 N

Explanation / Answer

a) first diagram

ii) fourth diagram

b) m = w/g = 103/9.8 = 10.5kg

c) T1 = 103 N

d) T2 = (0.8 +10.5)x 9.8 = 110.7 N

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