Omg, Its not working. What do I do
It's a physics question.
A friend told me earlier that I could just combine the two things so I can isolate for tension, BUT IT'S NOT WORKING. IM NOT GETTING THE RIGHT ANSWER.
CAN SOMEONE SPARE 5 MINUTES OF THEIR TIME?
http://oi57.tinypic.com/255p5j9.jpg
June 19, 2014
2 Comments • Newest first
Wow no on topic, but you guys sound really smart and cool making sense of this... I'm not being sarcastic either, it amazes me. <3
Fnet = ma
Fg2 = ma
Fg2 = (m1 + m2)a
Fg2 / (m1 + m2) = a
[9.8m/s^2 (15kg)] / (40kg + 15kg) = a
147N / 55kg = a
2.7m/s^2 = a
I just combined the two masses into one system (since the tension in the rope is irrelevant to this question, as are the gravitational and normal forces that act on the mass on the table). Since the table is frictionless, the only force then resulting in motion is gravity on the hanging mass. Substitute that for Fnet, and m is the sum of the two masses. Rearrange for a.
I have this drawn out too, if you still don't get how I did it.
If you want, PM me, and I'll take a picture/scan what I did.