Take a circular disc and put a five rupee coin at a point along its edge, when the disc moves at a higher speed, in which direction the coin is thrown off??
Answers
Explanation:
ANSWER
When no external force acts on a body its angular moment remains conserved.
From law of conservation of angular momentum, we have
J=lω=constant
where l is moment of inertia of the body and ω is angular velocity.
Also l=21MR2(for disc) where M is mass and R is radius of disc.
J=21MR2ω= constant
Since, man moves towards the centre of the disc, distance of mass distribution R decreases hence, ω increases.
Answer:
PHYSICS
A circular disc is rotating with angular velocity ω. If a man standing at the edge of the disc walks towards its centre then the angular velocity of the disc will.
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VIDEO EXPLANATION
ANSWER
When no external force acts on a body its angular moment remains conserved.
From law of conservation of angular momentum, we have
J=lω=constant
where l is moment of inertia of the body and ω is angular velocity.
Also l=
2
1
MR
2
(for disc) where M is mass and R is radius of disc.
J=
2
1
MR
2
ω= constant
Since, man moves towards the centre of the disc, distance of mass distribution R decreases hence, ω increases.