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A force of 8.7 N is applied to a steel block initally at rest on a horizontal frictionless surface. The force, which is directed at an angle of 30.0o below the horizontal, gives the block a horizontal acceleration of 5.3 m/s2.
a) Draw a free body diagram and sum forces.
b) What is the normal force of the surface acting on the block?

  • Mechanical engeering -

    Tcos@=ma .8.7Ncos30/5.3=1.4Kg.(b) w=mg=1.4times9.8=13.16

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