You\'re choreographing your school s annual ice show. You call for eight 60 kg s

Question

You're choreographing your school s annual ice show. You call for eight 60 kg skaters to join hands and skate side by side in a line extending 11 m. The skater at one end is to stop abruptly so the line will rotate rigidly about that skater. For safety, you don't want the fastest skater to be moving at more than 9 8 m/s, and you don't want the force on that skater's hand to exceed 300 N. What do you determine is the greatest speed the skaters can have before they execute their rotational maneuver? Express your answer using two significant figures.

Explanation / Answer

let vo is the greayest speed of the person at the end.

Apply, Fmax = m*a_max

= m*vo^2/R

300 = 50*vo^2/11

==> vo = sqrt(300*11/50)

= 8.12 m/s

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