Question 13. A Body Of M.i. 3 Kg M² Rotating With An Angular Velocity 2 Rad/s Has The Same K.e. As A Mass Of 12 Kg Moving With A Velocity Of (a) 1 M/s (b) 2 M/s (c) 4 M/s (d) 8 M/s Answer Doubt Answers

Geeta Pandey

Class 10th

Maths

2 years ago

Question 13. A body of M.I. 3 kg m² rotating with an angular velocity 2 rad/s has the same K.E. as a mass of 12 kg moving with a velocity of (a) 1 m/s (b) 2 m/s (c) 4 m/s (d) 8 m/s Answer

1 Answer

Dileep Vishwakarma

2 years ago

The velocity is given as, 2 1 Iω 2 = 2 1 mv 2 2 1 ×3(2) 2 = 2 1 ×12×v 2 v=1m/s Thus, the speed of the body is 1m/s.

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Geeta Pandey

Dileep Vishwakarma

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