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Question

A lift of mass 1000 Kg which is moving with acceleration of 1m/s−2 in upward direction, then the tension developed in string which is connected to lift is : -

A
9,800N
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B
10,800N
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C
11,000N
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D
10,000N
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Solution

The correct option is B 10,800N

The mass of the lift is 1000kg, the acceleration is 1m/s2 and the acceleration due to gravity is 9.8m/s2.

The tension developed in string is given as,

T=mg+ma

=1000×9.8+1000×1

=10800N

Thus, the tension developed in the string is 10800N.


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