HELP mE physics?

A 3.06 kg mass attached to a light string

rotates on a horizontal, frictionless table. The

radius of the circle is 0.408 m, and the string

can support a mass of 16.4 kg before breaking.

The acceleration of gravity is 9.8 m/s

2

.

What maximum speed can the mass have

before the string breaks?

Answer in units of m/s.

1 Answer

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  • ?
    Lv 7
    4 weeks ago

    What they probably meant is:

    The string can support a tension force that is equal to the weight of a 16.4 kg mass on Earth.

    So the maximum tension in the string if it is not to break is 16.4 * 9.81 N.

    The tension provides the centripetal force necessary to keep the object going in a circle

    (3.06 kg) (v^2) / r = F

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