Physics

Calculate the tension in a horizontal string that whirls a 1.9-kg toy in a circle of radius 2.3m when it moves at 2.8m/s on an icy surface.

Express your answer to two significant figures and include the appropriate units.

1.9(2.8)^2 .. then divid by 2.3
I got 12.30 N , is this correct ?

asked by James
  1. T=ma=mv²/R=1.9•2.8²/2.3= 6.48 N

    posted by Elena

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