Flame Institute SCF 18 Near Chawla Lights Phase 7 Mohali Chandigarh 9888949978

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Flame SCF 18 Near Chawla Lights Ph-7 Mohali 9888949978

149. A massless string is wrapped round a disc of mass M and radius R. Another end is tied to a mass m which is initially at height h from ground level as shown in the fig. If the mass is released then its velocity while touching the ground level will be

(a) √(2gh)

(b) √(2gh)M/m

(c) √(2ghm/M)

(d) √(4mgh/2m+M)

Ans. d

5/5 - (2 votes)

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