breaking tension of string is 90N . find maximum acceleration of a boy with which he can climb up without breaking the string.(mass of the boy is 10kg)
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Maximum tension = 90N
The string has to hold the the boy's weight and the force due to acceleration
Hence,
T = ma + mg
90 = 10a + 100
a = -10/10 = -1m/s²
The boy cannot climb the string as his weight (100N) is greater than the breaking tension 90N of the string
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