2
Question
What is the tension in the string attached to the pictured mass, which is hanging from the ceiling of an elevator that is accelerating upward at 3.00m/s2?
What is the tension in the string attached to the pictured mass, which is hanging from the ceiling of an elevator that is accelerating upward at 3.00m/s2?
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Solution
The correct option is C 89.6N
As elevator is moving with acceleration, a=3m/s2 so the mass will be moving with same acceleration as elevator. Thus from FBD of mass, ma=T−mgSo, tension in the string, T=ma+mg=7(3)+7(9.8)=89.6NThus, option B will be correct.
As elevator is moving with acceleration, a=3m/s2 so the mass will be moving with same acceleration as elevator.
Thus from FBD of mass, ma=T−mg
So, tension in the string, T=ma+mg=7(3)+7(9.8)=89.6N
Thus, option B will be correct.
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