EXPERTS PLZ HELP ME Is the moment of inertia of disc and ring are (mr2)/2 and mr2 respectively??and if yes how can the moment of inetial of ring greater than that of disc ??

BACK

Grade 12General Physics

EXPERTS PLZ HELP ME

Is the moment of inertia of disc and ring are (mr²)/2 and mr²respectively??
and if yes how can the moment of inetial of ring greater than that of disc ??

Ankit Jaiswal

9 Years agoGrade 12

2 Answers

Shaswata Biswas

9 Years ago

Yes, its true. The moment of inertia of a disc and a ring about an axis perpendicular to their plane are $\frac{1}{2}mr^{2}$ and $mr^{2}$ resspectively.

Here you have to notice in both the cases we are taking the mass are m. So in case of ring, mass m is distributed only at the circumference of the circle.

But in case of disc, the same mass is distributed along the whole area of the disc. That is the reason behind their fluctuations.

THANKS

Piyush Kumar Behera

9 Years ago

See the moment of inertia is proportional to r^2,for same mass ,as the mass is concentrated more farther from the ring it will have greater moment of inertia.

In viewing through a magnifying glass, one usually positions one's eyes very close to the lens. Does angular magnification change if the eye is moved back?

general physics

1 Answer Available

Last Activity: 9 Months ago

moment of inertia of a equilateral triangle about an axis passing through centre and perppendicular to the plane

general physics

1 Answer Available

Last Activity: 3 Years ago

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
the earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate the
deviation (a) at 40 latitude, (b) at the poles, and (c) at the equator

general physics

1 Answer Available

Last Activity: 3 Years ago

The length of a massless rod is measured using vernier callipers having 10 vernier scale divisions and least count of 0.1 mm. Two masses 1.00 ± 0.01 kg and 4.00 ± 0.02 kg are attached to its ends. If reading of vernier scale is 5 divisions coinciding with 1.3 cm, what is the % error in locating centre of mass from lighter mass

general physics

2 Answers Available

Last Activity: 3 Years ago

A block is kept on x-y plane at a point (2m,3m). It is pushed with a force of magnitude 10 Ntowards point (5m,7m). The force can be represented as?

general physics

1 Answer Available

Last Activity: 3 Years ago

View all Questions

EXPERTS PLZ HELP ME Is the moment of inertia of disc and ring are (mr2)/2 and mr2 respectively??and if yes how can the moment of inetial of ring greater than that of disc ??

Ankit Jaiswal

2 Answers

Shaswata Biswas

Piyush Kumar Behera

Other Related Questions on general physics

In viewing through a magnifying glass, one usually positions one's eyes very close to the lens. Does angular magnification change if the eye is moved back?

moment of inertia of a equilateral triangle about an axis passing through centre and perppendicular to the plane

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction ofthe earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate thedeviation (a) at 40 latitude, (b) at the poles, and (c) at the equator

A block is kept on x-y plane at a point (2m,3m). It is pushed with a force of magnitude 10 Ntowards point (5m,7m). The force can be represented as?

EXPERTS PLZ HELP ME

Is the moment of inertia of disc and ring are (mr²)/2 and mr²respectively??
and if yes how can the moment of inetial of ring greater than that of disc ??

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
the earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate the
deviation (a) at 40 latitude, (b) at the poles, and (c) at the equator