Question

The wheel of a motor accelerates uniformly from rest. In
the first second it rotates through an angle of 2 radian.
What would be the angle through which it rotates in the
next second?


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Answer 1

Answer:

7.5 rad

Explanation:

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Physics

Systems of Particles and Rotational Motion

Kinematics of Rotational Motion

The wheel of a motor, accel...

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Asked on December 20, 2019 by

Ishu Suryavanshi

The wheel of a motor, accelerated uniformly from rest, rotates through 2.5 radian during first second, find the angle rotates during next second

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ANSWER

θ=ω₀t+

2

1

αt

2

given:

θ=2.5rad

ω₀=0;

t=1sec;

α=?

using this values we get

⟹2.5=0×t+

2

1

α1

2

⟹α=2×2.5

⟹α=5rad/s

2

Angle turned during the first 2sec

2

:

2

1

αt

2

=

2

1

×5×2

2

=10rad

Angle turned during the 2nd second=10rad−2.5rad=7.5rad.