Answer:
A
Explanation:
Because of the convectional currents
Mass of object/source
Gravity
Fg=mg
Answer:
The angular speed of the record is 3.36 rad/s.
Explanation:
Given that,
Mass of record= 0.10 kg
Radius = 0.10 m
Angular speed = 4.7 rad/s
Moment of inertia 
Mass of putty = 0.020 kg
We need to calculate the angular speed
Using law of conservation of momentum



Put the value into the formula


Hence, The angular speed of the record is 3.36 rad/s.
Answer:
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