STATEMENT I : In general  to analyse  the motion of a body we can't treat it a point mass concentrated at its centre of mass

STATEMENT II: The radius of gyration may not be equal to seperation between centre of mass and axis, for a body.

RATES ASSURED

A) if the velocity of a particle is constant, then the average velocities for different intervals would be different

B) if the velocity of a particle is constant then the average velocities for different instants would be same

C) if the average velocity of a moving particle  is zero for time interval , then the instataneous velocity at all the instants within this interval may be zero

D) if the average velocity of  a moving particle is zero for a time interval , then the instantaneous velocity at some instants within this interval may be zero.

RATES ASSURED

For triangle ABC , a,b,c,r, R have their usual meanings

                                column I                                                                                  COLUMN II

1)if b cos²A/2 + acos²B/2 = 3c/2                                                         P) 1/2

where a= , b=1 then c is greater than                                                                        Q) 1

2)R=a/2 and r=c/k Then k must be greater than                                  R) 3/2

3)Circumcenter is at origin  and a sinA . P(x,y) lie inside               S)2

the circumcircle and k=1 /8|xy|  then k must be greater

4) 'G' is centriod and the angle between GB and GC is obtuse , Then a² is greater

than  (b-) , c- )

RATES ASSURED