Question

in a daring rescue by helicopter, two men with a combined mass of 172 kg are lifted to safety. a)If the helicopter lifts the menstraight up with constant acceleration, is the tension in the rescue cablegreater than, less than, or equalto the combined weight of the men? Explain. b) Determinethe tension in the cabke if the men are lifted with a constant accelleration of 1.10 m/s squared.

Answer 1

This question has been asked and answered already once today.

The cable tension is T = M (g + a)

a = 1.1 m/s^2
M is the mass
g = 9.8 m/s^2

M g is the weight

You do the numbers.

Answer 2

Yes, the tension is greater than the weight because the acceleration is positive.

Answer 3

Fy = ma
Fy = T - mg

ma = T - mg
(172)(1.1) = T - 1687.32

T = 1876.52 N