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barxatty [35]
3 years ago
6

- Po

Physics
1 answer:
slava [35]3 years ago
3 0

(1) particle model only

(2) and (4) wave model only

==> (3) either one

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Answer:

Explanation:

Given that,

Mass of ball m = 2kg

Ball traveling a radius of r1= 1m.

Speed of ball is Vb = 2m/s

Attached cord pulled down at a speed of Vr = 0.5m/s

Final speed V = 4m/s

Let find the transverse component of the final speed using

V² = Vr²+ Vθ²

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Vθ² = 4²—0.5²

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Vθ =√15.75

Vθ = 3.97 m/s.

Using the conservation of angular momentum,

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r2 = 2/3.97

r2 = 0.504m

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Using equation of motion

V = ∆r/t

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t = ∆r/Vr

t = (r1—r2) / Vr

t = (1—0.504) / 0.5

t = 0.496/0.5

t = 0.992 second

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