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9 February, 09:38

Dominic is the star discus thrower on South's varsity track and field team. In last year's regional competition, Dominic whirled the 1.6 kg discus in a circle with a radius of 1.1m, ultimately reaching a speed of 52 m/s before launch. Determine the net force acting upon the discus in the moments before launch.

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  1. 9 February, 10:00
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    The net force is 3933.1 N

    Explanation:

    Centripetal force (F) = mv^2/r

    m is the mass of the discus = 1.6 kg

    v is the speed of the discus = 52 m/s

    r is the radius of the circle = 1.1 m

    F = 1.6*52^2/1.1 = 3933.1 N
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