English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

Does this sound right?:

A cable is pulling an elevator *upwards*,
The tension(T) in the cable would be:
T=m*a+9.8m/s^2

2007-09-29 04:56:08 · 2 answers · asked by RogerDodger 1 in Science & Mathematics Physics

Thanks guys, that makes sense, i.e. 'capiche'

2007-09-29 05:16:15 · update #1

2 answers

More like

T= m ( a+9.8)

That's different than T=ma +9.8 which would be wrong

2007-09-29 05:04:49 · answer #1 · answered by Anonymous · 1 0

rijim is right about correcting the placement of your parentheses.

Total forces on the elevator:
T [up]
Weight (mg) [down]

Net force upward:
F_net = T - mg

acceleration upward:
a = F_net / m = (T - mg) / m = T/m - g

Solve the above for T:
T = m(a + g)

2007-09-29 05:13:28 · answer #2 · answered by RickB 7 · 1 0

fedest.com, questions and answers