Question

A horizontal disc rotates freely about a vertical axis through its centre at 120 rpm. A blob of wax

falls and sticks on it. Then the angular momentum and the frequency respectively.
A) increase, decrease
B)remains constant, increases
C) remains constant, decrease
D) increase, remains constant​

Answer 1

Answer:

c) remain constant , decrease

Answer 2

Answer:

The correct answer is C) remains constant, decrease.

Explanation:

• Both an object's rotational inertia and rotational velocity affect an object's angular momentum. If there is no external force, when an item changes shape (rotational inertia), it will also change angular velocity.
• Wireless communications depend on the frequency since a signal's frequency and wavelength are mathematically connected. It is expressed in hertz (Hz), a unit of measurement that is used internationally. One hertz is equivalent to one cycle per second.

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