A abhistud Apr 2017 2 0 Apr 29, 2017 #1 Why is my teacher saying that T = mg + ma = 24 N? Shouldn't it simply be 4 N? Link to the question https://ibb.co/dHiDkk

Why is my teacher saying that T = mg + ma = 24 N? Shouldn't it simply be 4 N? Link to the question https://ibb.co/dHiDkk

skeeter Aug 2008 113 35 Apr 29, 2017 #2 because ... $F_{net} = ma$ Tension is directed upward, force of gravity is directed downward ... $T - mg = ma$ $T = mg + ma \implies T = m(g+a)$

because ... $F_{net} = ma$ Tension is directed upward, force of gravity is directed downward ... $T - mg = ma$ $T = mg + ma \implies T = m(g+a)$

A AKM17 Mar 2018 3 0 Mar 29, 2018 #3 skeeter said: because ... $F_{net} = ma$ Tension is directed upward, force of gravity is directed downward ... $T - mg = ma$ $T = mg + ma \implies T = m(g+a)$ Click to expand... 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: Mar 29, 2018

skeeter said: because ... $F_{net} = ma$ Tension is directed upward, force of gravity is directed downward ... $T - mg = ma$ $T = mg + ma \implies T = m(g+a)$ Click to expand... 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.

T THERMO Spoken Here Jun 2010 422 33 NC Mar 29, 2018 #4 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

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