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A block is on a 24 degree incline, with a rope attached to a spring at the top of the ramp which has a spring constant of 65 N/m. If the spring is stretched 1.3 m, the coefficient of friction is 0.01, and the acceleration of the block is 0.35 up the incline, what is the mass of the block?

  • PHYSICS - ,

    You have spring force upward, part of the weight of the block downward (mgsinTheta), and frictiondownward mg*mu*cosTheta.

    The vector sum of those is equal to mass*acceleration.

    solve for m.

  • PHYSICS - ,

    the last term should be mg*mu(CosTheta).

  • PHYSICS - ,

    When you say mu, do you mean "meww"?

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