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A 220g block on a 54.0cm -long string swings in a circle on a horizontal, frictionless table at 70.0 rpm.

A) What is the speed of the block? m/s
B) What is the tension in the string? N

  • Physics -

    speed= angularvelociy*radius=2PI*70/60*.54

    tension= massinKg*V^2/r

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