A 1000kg elevator is descending vertically with an acceleration of 1.0ms-2, if the acceleration due to gravity is 10ms-2, the tension in the suspending cable is
T = , m = 1000kg, a = 1\(ms^{-1}\), g = 10\(ms^{-2}\)
W - T = ma
T = W - ma
T = mg - ma
T = m( g - a )
T = 1000( 10 - 1) = 1000 x 9 = 9000N.
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