Precession (conceptual)
A sπnning top precesses due to torque from?
Select the correct option:
🔒 Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
More rotational motion Practice Questions
A child of negligible spin sits on a rotating stool that turns at 2 rad/s with moment of inertia 4 k...
A child of negligible spin sits on a rotating stool that turns at 2 rad/s with moment of inertia 4 k...
A constant torque of 5 N·m acts on a wheel and turns it through an angular displacement of 8 radians...
A constant torque of 5 N·m acts on a wheel and turns it through an angular displacement of 8 radians...
A thin circular ring of mass M and radius R has a moment of inertia MR² about its central axis perpe...
A thin circular ring of mass M and radius R has a moment of inertia MR² about its central axis perpe...
A point on the rim of a wheel of radius 0.50 m moves while the wheel rotates at a constant angular v...
A point on the rim of a wheel of radius 0.50 m moves while the wheel rotates at a constant angular v...
A force is applied to a particle whose position vector relative to the origin is given, and the forc...
A force is applied to a particle whose position vector relative to the origin is given, and the forc...
A bomb at rest in deep space suddenly explodes into several fragments that fly off in different dire...
A bomb at rest in deep space suddenly explodes into several fragments that fly off in different dire...
A solid sphere and a thin spherical shell have the same mass and the same radius and rotate about th...
A solid sphere and a thin spherical shell have the same mass and the same radius and rotate about th...
A uniform beam of weight 200 N and length 4 m rests horizontally on two supports placed at its two e...
A uniform beam of weight 200 N and length 4 m rests horizontally on two supports placed at its two e...
A solid cylinder is released from rest and rolls without slipping down an incline making an angle wh...
A solid cylinder is released from rest and rolls without slipping down an incline making an angle wh...
A grinding wheel with moment of inertia 2 kg·m² experiences a constant net torque of 10 N·m about it...
A grinding wheel with moment of inertia 2 kg·m² experiences a constant net torque of 10 N·m about it...
A flywheel starts from rest and attains an angular velocity of 60 rad/s in 12 seconds under a consta...
A flywheel starts from rest and attains an angular velocity of 60 rad/s in 12 seconds under a consta...
A disc with moment of inertia 0.5 kg·m² rotates about its central axis at an angular velocity of 4 r...
A disc with moment of inertia 0.5 kg·m² rotates about its central axis at an angular velocity of 4 r...
About This Question
- Subject
- physics
- Chapter
- rotational motion
- Topic
- precession (conceptual)
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Gravity acting at COM with support reaction
- Tipping Torque: Consider a spinning top tilted at an angle. The force of gravity (Mg) acts at the Center of Mass (COM), and the normal reaction (N) acts at the tip.
- Couple: These two parallel and opposite forces create a torque τ=Rcm×Fg.
- Angular Momentum Response: The torque is perpendicular to the angular momentum (\uvecL) of the top. Instead of falling, \uvecL changes its horizontal orientation.
- Effect: The axis of the top traces a cone around the vertical. This motion is called precession.
This hard difficulty physics question is from the chapter rotational motion, covering the topic of precession (conceptual). It appeared in the 2025 exam.
Looking for more practice? Explore all physics questions or browse rotational motion questions on RankGuru.