Posted by arcos15 on Friday, October 19, 2012 at 12:46pm.
Two 12.0 kg boxes are connected by a massless string that passes over a massless frictionless pulley as shown above. The boxes remain at rest, with the one on the right hanging vertically and the one on the left d = 2.9 m from the bottom of an inclined plane that makes an angle of θ = 33° with the horizontal.
(a) What is the tension T in the string?
______ N
(b) Determine the magnitude of the frictional force between the box and the plane.
______N
You then polish the plane surface, let the blocks go and they accelerate at 3.0 m/s2
(c) The rope tension is now equal to
________N

physics help  Elena, Friday, October 19, 2012 at 2:28pm
(a) T=mg =12•9.8 =...
(b) F(fr)=Tmgsinα= ...
(c) ma =mgT
T=m(ga)

physics help  mohit, Wednesday, August 5, 2015 at 4:02pm
two mass 10 kg and 20 kg are connected with a massless string. a force pf 200 N is acting on the mass 20 kg . the acceleration of 10 kg is 12m/s^2 then the acceleration of 20 kg mass is
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