- #1
RohanTalkad
- 9
- 0
If a string can handle a max tension of 85 N what is the largest mass that could be lifted with this string if it is lifted with an acceleration of 2.0 m/s^2 up on the moon?
Let up be positive in value.
Ft = - 85 N, a = 2.0 m/s^2, Fg = -1.6 m/s^2
F = ma -> Fg = mg -> Ft = ma + mg -> Ft = m ( a + g) [/B]
When I do the problem, I get a negative mass ...
Ft = m (a + g) -> -85 N = m ( 2 m/s^2 - 1.6 m/s^2 ) -> m = - 212.5 kg
Do you see the mistake? [/B]
Let up be positive in value.
Ft = - 85 N, a = 2.0 m/s^2, Fg = -1.6 m/s^2
Homework Equations
F = ma -> Fg = mg -> Ft = ma + mg -> Ft = m ( a + g) [/B]
The Attempt at a Solution
When I do the problem, I get a negative mass ...
Ft = m (a + g) -> -85 N = m ( 2 m/s^2 - 1.6 m/s^2 ) -> m = - 212.5 kg
Do you see the mistake? [/B]
Last edited: