Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JIPMER 2005
Exam
JIPMER
Year
2005
Subject
Physics
Chapter
Rotational Motion

JIPMER 2005 · Physics · Rotational Motion

Five particles of mass 2 kg are attached to the rim of a circular...

Five particles of mass 2 kg are attached to the rim of a circular disc of radius 0.1 m and negligible mass. Moment of inertia of the system about the axis passing through the centre of the disc and perpendicular to its plane is

Options

  1. A1 kg m21 \mathrm{~kg} \mathrm{~m}^2
  2. B0.1 kg m20.1 \mathrm{~kg} \mathrm{~m}^2
  3. C2 kg m22 \mathrm{~kg} \mathrm{~m}^2
  4. D0.2 kg m20.2 \mathrm{~kg} \mathrm{~m}^2

Correct answer

B. 0.1 kg m20.1 \mathrm{~kg} \mathrm{~m}^2

Step-by-step solution

The moment of inertia of the given system that contains 5 particles each of mass =2=2 kg\mathrm{~kg}on the rim of circular disc of radius 0.1 m and of negligible mass is given by =\text{ MI of disc }+ MI of particle \text{ MI of particle } Since the mass of the disc is negligible therefore, MI of the system = MI of particle =5×2×(0.1)2=0.1 kg=5 \times 2 \times(0.1)^2=0.1 \mathrm{~kg} m2\mathrm{~m}^2
Practice Rotational Motion on Quantrex Academy →

More from Rotational Motion

A solid sphere A of radius R and mass M is attached at a point to a smaller solid sphere… NEET 2026The angular speed of a flywheel is increased from 600 rpm to 1200 rpm in 10 s. The number… NEET 2026A thin wire of length ' L ' and linear mass density ' m ' is bent into a circular ring… NEET 2026A thin horizontal disc is rotating about a vertical axis passing through its fixed centre… NEET 2026The Sun rotates around its centre once in 27 days. What will be the period of revolution… NEET 2025A sphere of radius R is cut from a larger solid sphere of radius 2 R as shown in the… NEET 2025The radius of gyration of a solid sphere of mass 5 kg about X Y is 5 m as shown in… NEET 2024A wheel of a bullock cart is rolling on a level road as shown in the figure below. If its… NEET 2024 Full Rotational Motion list All JIPMER PYQs