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Crate on a conveyor belt..?
A 11 kg crate is placed on a horizontal conveyor belt. The materials are such that u s = 0.55 and u k =0.26. What is the maximum acceleration the belt can have without the crate slipping? How would you draw a free body diagram of the forces acting on the crate (what would it look like?) I know that gravity pulls downward on the crate, but which direction is the normal in, and friction?

  • physics -

    Forces on crate: friction on the belt causes acceleration.

    solve for a
    I wouldn't draw the weight, as it is countered by the converyor holding it up, so it is net zero. What is important is net force accelerating, or friction.

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