AP EAMCET · PHYSICS · Rotational Motion
Ratio of angular velocity of hour hand of a watch and the angular velocity of rotation of earth is
- A 1:1
- B 2:1
- C 4:1
- D 1:2
Answer & Solution
Correct Answer
(B) 2:1
Step-by-step Solution
Detailed explanation
\(\omega_h = \frac{2\pi}{T_h} = \frac{2\pi}{12 \text{ hr}}\) \(\omega_e = \frac{2\pi}{T_e} = \frac{2\pi}{24 \text{ hr}}\) \(\frac{\omega_h}{\omega_e} = \frac{2\pi/12}{2\pi/24} = \frac{24}{12} = 2:1\)
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