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3 years ago

PHYSICS QUESTION - CAN ANYONE HELP NOW?

Physics

2 answers:

Brums [2.3K]3 years ago

6 0

Givens: m=20kg r=2.0m L=360 kg m^2/s

Unknown: Speed . (But there are two "types of speed" which are angular speed and linear speed and ARE DIFFERENT)

Formulas: L=Iω Angular momentum = inertia x angular velocity (L=Iω)

I=mr^2; ω=v/r

Therefore, L=r^2m * v/r = rmv

L=rmv

360=20*2*v

360/(20*2) =v

360/40= v

v=9m/s (linear tangent speed)

Angular velocity ω= v/r

ω= 9/2

ω= 4.5rads/s (angular speed)

In other words, both 9 and 4.5 should be right if explained correctly.

GrogVix [38]3 years ago

3 0

It's velocity when it strikes the ground is. D. 232.9 kg.m/s<span>.
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I hope this helps!!!

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