AP EAMCET · PHYSICS · Laws of Motion
Two spheres P and Q, each of mass 200 g are
attached to a string of length one metre as
shown in the figure. The string and the
spheres are then whirled in a hor i zon tal
circle about O at a constant angular speed.
The ratio of the tension in the string between
P and Q to that of between P and O is (P is at
mid-point of the line joining O and Q)
- A \(\frac{1}{2}\)
- B \(\frac{2}{3}\)
- C \(\frac{3}{2}\)
- D \(\frac{2}{1}\)
Answer & Solution
Correct Answer
(B) \(\frac{2}{3}\)
Step-by-step Solution
Detailed explanation
Tension between \(P\) and \(Q\) is \(T_1=\) centripetal force on \(Q=m r \omega^2\) \[ =200 \times 1 \times \omega^2\left(\mathrm{~g} \cdot \mathrm{m} \cdot \frac{\mathrm{rad}^2}{\mathrm{~s}^2}\right) \] Tension between \(O\) and \(P\) is \(T_2=\) centripetal force on \(Q+\)…
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