Why is tension added with mg?

Aug 2008
113
35
because ...

$F_{net} = ma$

Tension is directed upward, force of gravity is directed downward ...

$T - mg = ma$

$T = mg + ma \implies T = m(g+a)$
 
Mar 2018
3
0
because ...

$F_{net} = ma$

Tension is directed upward, force of gravity is directed downward ...

$T - mg = ma$

$T = mg + ma \implies T = m(g+a)$
Yes you are right!
What I like about these tasks, the fact that they can be solved with the help of the system of equations and the transfer of terms.
 
Last edited by a moderator:
Jun 2010
422
33
NC
Hi AKM17

Yes, the math works. Set it up and use its operations. (Note: "Net" is not a math operation.
A net is for catching butterflies).

Don't know your level but here is more reading (of possible interest).

About f=mA

Blue Ocean Towing

Good luck with your studies! JP