Posts

A boy hits a baseball with a bat and imparts an impulse J to the ball . The boy hits the ball again with the same force , except that ball and bat are in contact for twice the amount of time as in the first hit . The new impulse equals : Half the original impulse The original impulse Twice the original impulse Four times the original impulse

Post a Comment

Moment of inertia of a uniform circular disc about a diameter is `I`. Its moment of inertia about an axis perpendicular to its plane and passing through a point on its rim will be. 1999 A. `6 I` B. 4 I C. 2 I D. 8 I

Post a Comment

Three identical spherical shells, each of mass m and radius r are placed as shown in figure. Consider an axis XX' which is touching to two shells and passing through diameter of third shell. Moment of inertia of the system consisting of these three spherical shell about XX' axis is 2015 16/5MR2 4 MR2 11/5MR2 3MR2

Post a Comment

From a disc of radius R and mass M, a circular hole of diameter R, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre? 2016 (a) 11 MR2/32 (b) 9 MR2/32 (c) 15 MR2/32 (d) 12MR2/32

Post a Comment

Four identical thin rods each of mass M and length l form a square frame. Moment of inertia of this frame about an axis through the centre of the square and perpendicular to its plane is 2009 (a) 2/3 Ml2 (b) 13/3 Ml2 (c) 1/3 Ml2 (d) 4/3 Ml2

Post a Comment

The moment of inertia of a disc of mass M and radius R about an axis which is tangential to the circumference of the disc and parallel to its diameter, is 1. 5/4MR2 2. (2/3)MR2 3. (4/5)MR2 4. (2/3)MR2

Post a Comment

The moment of inertia of a uniform circular disc of radius R and mass M about an axis touching the disc at its diameter and normal to the disc is : 2/5 〖𝑀𝑅〗^2 3/5 〖𝑀𝑅〗^2 1/2 〖𝑀𝑅〗^2 〖𝑀𝑅〗^2

Post a Comment

The moment of inertia of a thin uniform rod of mass M and length L about an axis passing through its midpoint and perpendicular to its length is I0. Its moment of inertia about an axis passing through one of its ends and perpendicular to its length is : 2011 (a) I0 + ML2/2 (b) I0 + ML2/4 (c) I0 + 2ML2 (d) I0 + ML2

Post a Comment

The moment of inertia of a uniform circular disc is maximum about an axis perpendicular to the disc and passing through. 2012 B C D A

Post a Comment

In a rectangle ABCD (BC=2AB). The moment of inertia is minimum anout which the axis will be 1993 BC BD HF EG

Post a Comment

ABC is a traiangular plate of uniform thickness. The sides are in the ratio shown in the figure. "I" _"AB" , "I" _"BC"   and "I" _"CA"   are the moments of inertia of the plate about AB, BC and CA respectively. Which one of the following relations is correct? 1995 "I" _"AB" > "I" _"BC" "I" _"BC" > "I" _"AB" "I" _"AB" + "I" _"BC"   = "I" _"CA" "I" _"CA" IS MAXIMUM

Post a Comment