Question

(Ans. 5.26 rps)
2. A mass of 2 kg is rotating on a circular path of
radius 0.8 m with angular velocity of 44 rad s-?. If
the radius of the path becomes 1.0 m, what will
be the value of angular velocity ?
29 16 rod.-1​

Answer 1

Answer:

Circular Motion

Explanation:

★ Given ;

» mass ( m ) = 2 kg

» radius 1 ( R1 ) = 0.8 m

» Angular velocity 1 ( w 1 ) = 44 rad / s

» Radius 2 ( R2 ) = 1 m

★ Angular velocity 2 ( w 2 ) = ????

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[ Angular velocity ( W ) = Velocity of body ( v ) / radius of track ( R ) ]

so ;

★ W ≈ 1 / R ★

______________________________________________________________________

★ W1 / W2 = 1 / R1 / 1 / R2

» W1 / W2 = R2 / R1

» 44 / W2 = 1 / 0.8

» W2 = 44 × 0.8

★ New Angular velocity ( W2 ) = 35.2 rad / second ★

Hope it helps you

Answer 2

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