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physics

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A block of mass 2.40 kg is pushed 2.09 m along a frictionless horizontal table by a constant 18.6 N force directed 23.7o below the horizontal. Determine the work done by the applied force.
Determine the magnitude of the normal force exerted by the table.
Determine the magnitude of the force of gravity
Determine the net force on the block.

  • physics -

    (a) the work done by the applied force
    W=F(x) •s=F•cos α•s= 18.6•cos23.7•2.09 = ….
    (b) the magnitude of the normal force exerted by the table
    N =mg+F(y) =mg+Fsin α = 2.4•9.8 +18.6•sin23.7 = …
    (c) the magnitude of the force of gravity
    mg = 2.4•9.8 = …
    (d) F(net) =F(x) = F•cos α•= 48.6•cos23.7= …

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