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22 August, 07:23

A roller coaster car is going over the top of a 18-m-radius circular rise. at the top of the hill, the passengers "feel light," with an apparent weight only 50 % of their true weight.

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  1. 22 August, 09:28
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    The solution for this problem is:

    If they feel 50% of their weight that means that the centripetal force is also 50% of their weight 1g - 0.5g = 0.5g

    Then 0.5 * 9.8m/s² * 18m = 88.2 would be v²

    Then get the square root, the answer would be:

    and v = 9.391 m/s is the answer.
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