A ring and a disc having the same mass, roll without slipping with the same linear velocity. If the kinetic energy of the ring is 8 j , Find the kinet

Question

A ring and a disc having the same mass, roll without slipping with the same linear velocity. If the kinetic energy of the ring is 8 j , Find the kinet

A ring and a disc having the same mass, roll without slipping with the same linear velocity. If the kinetic energy of the ring is 8 j , Find the kinetic energy of disc (in J)
A. 2 J
B. 4 J
C. 6 J
D. 12 J

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
`(KE_("disc"))/(KE_("ring"))=(1+(K^(2)//R^(2))_(d))/(1+(K^(2)//R^(2))_(r ))=(1+(1)/(2))/(1+1)=((3)/(2))/(2)`
`KE_("disc")=(3)/(4)xx KE_("ring")`
`= (3)/(4)xx(2)/(8) = 6 J`.

4 views Answered 2023-02-05 15:29