A lift of mass 400kg is hung by a wire calculate the tension in the wire when the lift is (a) at rest (b) moving upward with a constant velocity of 1.0m/s (c) moving upward with an acceleration of 2.0m/s square
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39
When the lift is at rest,
T = mg = 400 * 10 = 4000N
When it is moving upward with a constant velocity,
T = mg = 4000N
When it is moving upward with an acceleration of 2m/s²,
T = mg + ma = 4000 + 400*2 = 4800N
T = mg = 400 * 10 = 4000N
When it is moving upward with a constant velocity,
T = mg = 4000N
When it is moving upward with an acceleration of 2m/s²,
T = mg + ma = 4000 + 400*2 = 4800N
Answered by
1
When the lift is at rest,
T = mg = 400 * 10 = 4000N
When it is moving upward with a constant velocity,
T = mg = 4000N
When it is moving upward with an acceleration of 2m/s²,
T = mg + ma = 4000 + 400*2 = 4800N
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