Let the elevator have a mass of 1700 kg and an upward acceleration of 2.5 m/s2. Find T.
If the formula is T=ma then multiplying 1700 with 2.5 should give me the value for T but for some reason I'm not getting the right answer. Is it supposed to be 4250 or am I missing something? Thanks!
2007-09-18 00:15:59 · 6 answers · asked by me 1 in Science & Mathematics ➔ Physics
Ok I guess I was using the wrong formula. It says in my book that ma(sub x) = T
I just ignored the little x beside the a because I didn't know what it was supposed to mean :P
2007-09-18 00:26:28 · update #1
what is the formula for tension?
2007-09-18 00:28:05 · update #2
the question is correct, T is tension of the cable and it is equal to m*a, as it is a reaction to a force. as for ma(sub x), x just means that it is a horizontal acceleration, resulting also to a horizontal tension.
now as for your problem, you should take into account the acceleration due to gravity.
now, if the elevator is stationary (a = 0), the tension T is just equal to the weight of the elevator or T = W = m*g, where g = 9.8 m / s². when the elevator moves and accelerates at
2.5 m / s², the tension reacts (due to the 3rd Law), with a force = m*a.
thus, the total tension is...
T = m*a + m*g
T = 1700*2.5 + 1700*9.8
T = 20910 N
2007-09-18 00:31:20 · answer #1 · answered by quigonjan 3 · 3⤊ 0⤋
T = Tension
Tension is a force in Newtons
this question deals with apparent weight
when the elevator moves up the equation is a s follows
T = mass*gravity + mass* acceleration
= 20910 Newtons
2007-09-18 01:11:56 · answer #2 · answered by Anonymous · 0⤊ 0⤋
you have neglected the full factor of physics. The acceleration close to Earth's floor and brushing aside air resistance is persevering with...that is a similar for all mass. You maximum suitable bypass seem it up and discover out what that acceleration considering that's the finished lesson you have neglected out on. hint: the respond is written on your question.
2016-10-18 23:30:57 · answer #3 · answered by hussaini 4 · 0⤊ 0⤋
Dear I'mbored,
T is not equal to ma. F = ma ; Force = mass x acceleration. The question is wrong, Don't waste your time on it.
2007-09-18 00:26:57 · answer #4 · answered by Pandian p.c. 3 · 0⤊ 2⤋
680
2007-09-18 00:36:07 · answer #5 · answered by Delfin S 2 · 0⤊ 2⤋
ma is F the force. Are you sure you meant that only when you used the symbol T?
2007-09-18 00:22:22 · answer #6 · answered by Swamy 7 · 0⤊ 2⤋