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physics help

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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.


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


  • physics help - ,

    (a) T=mg =12•9.8 =...
    (b) F(fr)=T-mgsinα= ...
    (c) ma =mg-T

  • physics help - ,

    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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