Mass of an object up inclined plain

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The discussion centers on calculating the mass of an object, referred to as Brisket, being pulled up a frictionless inclined plane at a 24.0° angle using a force of 1008 N. The object accelerates down the ramp at 0.29 m/s². The correct approach involves using the equation mg*sin(24°) - FR = ma to account for the forces acting on Brisket. The initial calculation of 112.59 kg was incorrect due to misapplication of the force equations.

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applied all the force FR=1008N that I could to the (massless, unstretchable) rope in an effort to pull Brisket into the trailer, up the ramp that formed an angle of 24.0° with the ground. Brisket moved down the ramp with an acceleration of magnitude 0.29m/s2. With this information, and assuming the ramp is frictionless, what is Brisket's mass (in kg)?

What i have done so far is Fn = mg cos (angle) and that is 1008/ 9.8cos 24(degrees)= 112.59 kg but it is not correct can anyone direct me into the right direction

Much appreciated
 
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You're trying to pull the object UP the ramp, but it's moving DOWN. Draw a free body diagram!
 
The equation should be
mg*sin(24)(downward force) - FR = ma
 

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