Question

A wheel rotating with uniform angular acceleration cover 50revolutiin in the first 5 sec after the start if the angular acceleration at end of 5 sec in xπ rad / s² then find the value of x​

Answer 1

Answer:

t=5s and θ=50rev

initial angular speed ω

o

=0

Comparing with linear motion s=

2

1

at

2

θ=

2

1

αt

2

⟹α=

5

2

2×50

⟹α=4rev/s

2

Again comparing with v=u+at and u=0

ω=α×t=4×5

⟹ω=20rev/s

Explanation:

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