Question

The length of an inclined plane at
30° is 20 m. A ring of mass 5 kg starts
rolling from rest from the top of the
plane. Calculate the velocity of the
ring at the bottom of the plane if
loss of kinetic energy is negligible (g
10 m/s2)​

Answer 1

Explanation:

Answer

The velocity of solid sphere on the bottom of inclined plane v=

1+

MR

2

I

2gh

The moment of inertia of solid sphere about its diameter

I=

5

2

MR

2

v=

(1+

5

2

)

2gh

=

7

10

gh

h=

10g

7v

2

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