6. A horizontal platform vibrates up and down with S.H.M. of amplitude 20 cm. At what
frequency will an object be kept on the platform so as to lose contact with the platform?
9.8 ms^-2
Answers
Answered by
1
Answer:
Let m be the mass of the object and A be the amplitude of motion of platform. If R1 is the normal reaction of the platform at the highest point then (mg - R1) = mω2A R1 = (mg – mω2A) .. (1) At the lowest point, if R2 is the normal reaction of the platform, then When the object is about to leave the platform the normal reaction of the surface is zero. From (1) and (2), it can be seen that the object can leave the platform only at the highest point.
Similar questions