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General Physics

q.1 A horozontal platform vibrates up & down with a SHM of frequency 2 / pai HZ. find the max permissible amplitude so that an object kept on the platform remain in contact with platform.

Profile image of TANAYA  GHOSH
15 Years agoGrade
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Profile image of vikas askiitian expert
ApprovedApproved Tutor Answer15 Years ago

x = A sinwt

a (accleration) = -Aw2sinwt

maximum accleration = -w2A

when this accleration is just equal to accleration due to gravity then particle is about to leave

the surface ...if accleration is more than this value then it will loose the contact

w2A = g

A = g/W2               ....................1

w = 2pif

f = 2/pi so

w = 4radiansec-1

A = g/42 = 10/16 = 0.625m                            (g = 10m/s2)

 

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