MCQ
A particle is tied to $20 cm$ long string. It performs circular motion in vertical plane. What is the angular velocity of string when the tension in the string at the top is zero
- ✓$5 rd / sec$
- B$2 rad / sec$
- C$7.5 rad / sec$
- D$7 rad / sec$
✓
Answer
Correct option: A.
$5 rd / sec$
(a)
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In the experiment of potentiometer, at balance, there is no current in the
Air in a cylinder is suddenly compressed by a piston, which is then maintained at the same position. With the passage of time
Helium at $27^{\circ} \mathrm{C}$ has a volume of 8 litres. It is suddenly compressed to a volume of 1 litre. The temperature of the gas will be $[\gamma=5 / 3]$
→Coatings used on raincoat are waterproof because
Two identical stringed instruments have frequency $100 \mathrm{~Hz}$. If tension in one of them is increased by $4 \%$ and they are sounded together then the number of beats in one second is
→In the circuit shown in figure, the heat produced in $5 ohm$ resistance is 10 calories per second. The heat produced in 4 resistance is
→
The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane along the perpendicular direction. The direction of the induced current in the conducting plane will be
A current $i$ passes through a wire of length $l$, radius of cross-section $r$ and resistivity $\rho$. The rate of heat generation is
→When heat in given to a gas in an isobaric process, then
A body moves from rest with a constant acceleration. Which one of the following graphs represents the variation of its kinetic energy $K$ with the distance travelled $x$ ?
→