Civil Engineering - Applied Mechanics - Discussion
Discussion Forum : Applied Mechanics - Section 1 (Q.No. 28)
28.
The tension in a cable supporting a lift
Discussion:
5 comments Page 1 of 1.
Susheel kumar said:
4 years ago
Acceleration is produced due to the net force.
So, when lift moving downward net force will be T-mg and it generates -ve acceleration that is downward direction.
T-mg =-ma.
T = mg-ma which is less.
So, when lift moving downward net force will be T-mg and it generates -ve acceleration that is downward direction.
T-mg =-ma.
T = mg-ma which is less.
Suresh said:
4 years ago
As upward tension in cable is= T+mg.
As downward tension in cable = T-mg.
So, it shows that the downward is being substracted so it is less.
As downward tension in cable = T-mg.
So, it shows that the downward is being substracted so it is less.
Dhiru said:
4 years ago
Upward motion acceleration tension against gravity. so more tensile stress is right.
Aaina said:
5 years ago
I think the answer is B.
SUNIL said:
9 years ago
Due to the potential energy it is decreasing.
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