Homework Help: physic

Posted by Chan on Friday, October 9, 2009 at 3:22am.

Hi!Question:Two packing crates of masses m1 = 10.0 kg and m2 = 6.50 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 6.50 kg crate lies on a smooth incline of angle 45.0°. Find the acceleration of the 6.50 kg crate.
_________m/s2 (up the incline)
Find the tension in the string.
_________ N
Thank you so much

physic - bobpursley, Friday, October 9, 2009 at 9:36am
I assume the m1 is hanging vertically. This is called an Atwood machine

the force of gravity acts on both, on m1,it is vertical, m1*g
On m2, it is downward,of course, but the component down the plane is m2*g*sinTheta

Net force=totalmass*acceleration
m1*g-m2*gsinTheta=(m1+m2)*a
solve for a.
The tension? at M1,
tension=m1*(g-a)
physic - Anonymous, Friday, October 1, 2010 at 4:13pm
ur dumb
physic - bobpursley, Friday, October 21, 2011 at 3:48pm
AS_HOLES
physic - Bobiscool, Friday, February 15, 2013 at 10:42pm
keep ur head up bob, keep rocking in the free world and DOOTDODOALOOTDOO DOOTDOOT

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