Question

mass
" A ring, a disc and
a solid sphere have
Same
amd radius . All of them are
Tolled docon
on an inclined plame from
same height simultaneously. The body that
wolll Teach
at the bottom last amongst is
4m)
c) ring and disc dy solid sphere
ay ring
b) disc​

Answer 1

Answer:

ANSWER

The moment of inertia of ring, disc, solid sphere and hollow sphere are mr

2

,

2

1

mr

2

,

5

2

mr

2

and

3

2

mr

2

respectively. As the moment of inertia is the resistance to rotational motion we see that the object with least moment of inertia will reach the bottom first. Thus the order of reaching the bottom is S,D,HandR.

The gain in total kinetic energy is equal to loss in gravitational potential energy which in turn in same for all 4 objects and equal to mgh, where h is height of inclined plane.