Answers

2014-06-19T10:50:44+08:00
I presume that 8m would be the radius of the circle since not specified.
Direct substitution to the formula F = mv²/R

where F = centripetal force in Newtons (N)
         m = mass in kg
          v = velocity in m/s
          R = radius in meters.

So we have:

         F = mv²/R
            = 100(10)²/8
            =100X100 / 8
            = 10000/8
            = 1250 N
            = 1.25 kN(kilo Newtons) ANSWER..
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