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physics

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A 2.00 kg aluminum block and a 5.20 kg copper block are connected by a light string over a frictionless pulley. They sit on a steel surface, where θ = 28.0°.


Determine the sum of the magnitudes of the forces of friction acting on the blocks._____________N

I don't understand how to solve this question. Please help! Thanks.

  • physics -

    I don't understand the question.

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