A thin metal disc of radius of 0.25 m and mass 2 kg starts from rest and rolls down on an inclined plane. If its rotational kinetic energy is 4 J at the foot of inclined plane, then the linear velocity at the same point, is in 
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a)
2
b)
c)
d)
A thin metal disc of radius of 0.25 m and mass 2 kg starts from rest and rolls down on an inclined plane. If its rotational kinetic energy is 4 J at the foot of inclined plane, then the linear velocity at the same point, is in .
a)
2
b)
c)
d)
Question ID - 53324 | SaraNextGen Top Answer
A thin metal disc of radius of 0.25 m and mass 2 kg starts from rest and rolls down on an inclined plane. If its rotational kinetic energy is 4 J at the foot of inclined plane, then the linear velocity at the same point, is in .
a)
2
b)
c)
d)
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A thin metal disc of radius of 0.25 m and mass 2 kg starts from rest and rolls down on an inclined plane. If its rotational kinetic energy is 4 J at the foot of inclined plane, then the linear velocity at the same point, is in |
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2 |
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c) |
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d) |
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1 Answer
127 votes
Answer Key / Explanation : (b) -
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(b) Rotational kinetic energy
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Rotational KE 
(where 
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127 votes
Answer Link
127