Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Rotational Motion question

2000 · Q155
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Physics
  4. /Rotational Motion
  5. /2000 · Q155

Rotational Motion question

2000 · Q155

NEETPhysicsRotational MotionMCQ+4 / −1
As shown in the figure at point O a mass is performing vertical circular motion. The average velocity of the particle is increased, then at which point will the string break

AIPMT 2000 Physics - Rotational Motion Question 24 English
  1. A
    A
  2. B
    B
  3. C
    C
  4. D
    D
View written solutionFree

Correct answer: B

When a sphere is rotating in a vertical circle, it exerts the maximum outward pull when it is at the lowest point B.

Therefore, tension at B is maximum = mv2R{{m{v^2}} \over R}Rmv2​

So, the string breaks at point B.

Previous

More from Rotational Motion

  • A uniform rod of mass 20 kg and length 5 m leans against a smooth vertical wall making an angle of 60∘ with it. The other end rests on a rough horizontal floor. The friction force that the floor exerts on the rod is (Take g=10 m/s2…2025 · MCQ
  • The Sun rotates around its centre once in 27 days. What will be the period of revolution if the Sun were to expand to twice its present radius without any external influence? Assume the Sun to be a sphere of uniform density.2025 · MCQ
  • A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is: Includes diagram2025 · MCQ
  • A bob is whirled in a horizontal plane by means of a string with an initial speed of ω rpm. The tension in the string is T. If speed becomes 2ω while keeping the same radius, the tension in the string becomes:2024 · MCQ
  • The moment of inertia of a thin rod about an axis passing through its mid point and perpendicular to the rod is 2400 g cm2. The length of the 400 g rod is nearly:2024 · MCQ
  • A wheel of a bullock cart is rolling on a level road as shown in the figure below. If its linear speed is v in the direction shown, which one of the following options is correct (P and Q are any highest and lowest points on the… Includes diagram2024 · MCQ
  • The radius of gyration of a solid sphere of mass 5 kg about XY is 5 m as shown in figure. The radius of the sphere is 7​5x​ m, then the value of x is: Includes diagram2024 · MCQ
  • A constant torque of 100 N m turns a wheel of moment of inertia 300 kg m2 about an axis passing through its centre. Starting from rest, its angular velocity after 3 s is :-2023 · MCQ