Which prediction is true based on this population pyramid?
2 answers:
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Answer:
The correct solution is "64 RPM".
Explanation:
The given values are:
Mass,
M = 2.3 kg
Diameter,
D = 20 cm
i.e.,
= 0.2 m
Rotates at,
N = 110 rpm
Mass of block,
m = 460 g
i.e.,
= 0.46 kg
According to angular momentum's conservation,
⇒
then,
⇒
On substituting the values, we get
⇒
⇒
⇒
Now,
⇒
then,
⇒
⇒
⇒
⇒