Question

if a rotating fan is switched off,than its angular accelration and angular velocity will be

Answer 1

Explanation:

Convergent evolution is the independent evolution of similar features in species of different periods or epochs in time. Convergent evolution creates analogous structures that have similar form or function but were not present in the last common ancestor of

Answer 2

1st case:

We can write the equation of motion for circular motion as:

ω2=ω02+2aθn

Now, ω=2ω0,θ=36×2π (given)

So, 4ω02=ωo2+2α×36×2π

So, α=4×144π−3ω02

2nd case:

0=4ω02−2×4×144π3ω02×θ

So, θ=24π

So, number of rotations made by the fan before coming to rest =2π24π=12

( or )

When a celling fan is switched off, its angular velocity falls to half while it makes 36 rotations.

The both are correct

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