मराठी

A disc of mass 4 kg rolls on a horizontal surface. If its linear speed is 3 m/ s, what is its total kinetic energy? -

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प्रश्न

A disc of mass 4 kg rolls on a horizontal surface. If its linear speed is 3 m/ s, what is its total kinetic energy?

संख्यात्मक

उत्तर

Total K.E. of the disc

`= 3/4 mv^2`

`= 3/4 xx 4 xx (3)^2`

= 27 J

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