Q.

Boy is pulling the rope as shown below. Reading of the weighing machine is

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a

13kg

b

7kg

c

10kg

d

28kg

answer is A.

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Detailed Solution

T = 5(10+4) = 70NT + N = 20gN = 200 – 70 = 130 N = 13kgwt
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Boy is pulling the rope as shown below. Reading of the weighing machine is