Question

A ball of mass m is moving over a fixed smooth
track as shown. The velocity of ball at point A is u
and that on point B is v. If h, and he are the heights
of points A and B respectively above the ground,
then (1) If <hg, then v> (2) IfA> hg, then u <v
@ If h = hp, then v>u (4) If h>ng, then u>v

​

Answer 1

Answer:

h>ngIf <hg, then v> (2) IfA> hg, then u <v

@ If h = hp, then v>u (4) If h>ng, then

Explanation:

A ball of mass m is moving over a fixed smooth

track as shown. The velocity of ball at point A is u

and that on point B is v. If h, and he are the heights

of points A and B respectively above the ground,

then (1) If <hg, then v> (2) IfA> hg, then u <v

@ If h = hp, then v>u (4) If h>ng, then u>v