Physics help please!

[SlayerZ99]

My teacher has assigned about 30 problems to do and he doesnt teach us anything about physics. Im stuck on this problem. I dont know why Im stuck but I am.

A rescue helicopter lifts two people using a winch and a rescue ring as shown in Figure 21 (Helicopter lifting two people with a mass of 120 kg; and the rope is 12 meters long)

A. The winch is capable of exerting a 2000-N force. What is the maximum mass it can lift. My answer 204.08 kg

B. If the winch applies a force of 1200 N, what is the rescuer's and victim's acceleration. My answer 6.87 m/s^2 (Totally wrong because that would be a super fast winch)

C. Using the acceleration from part b, how long does it take to pull the people up to the helicopter? My answer 1.7 seconds

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[Kalphiter²]

B)

Summation of forces in the y direction: force up + force down

Force down, the weight of the people. This is negative because weight is downward.
W = mg
W = 120 kg * -9.8 m/s/s
W = -1176 Nt

Force up. This is positive because the helicopter is lifting the two people.
F = 1200 Nt

Add: F + W = 24 Nt
The direction is positive, meaning that the people are being moved up.

Go back to the formula "F = ma"
24 Nt = 120 kg * a
a = 24 Nt / 120 kg = 0.2 m/s/s

[SlayerZ99]

Oh thats how I messed up

instead of doing 1200 - 1176 I didnt 2000 - 1176.

Thanks