A block connected to a spring oscillates vertically. A damping forc...

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A block connected to a spring oscillates vertically.
A damping force \( F_{d} \), acts on the block by the surrounding medium. Given as \( F_{d}=-b V b \) is a positive constant which depends on :
(a) viscosity of the medium
(b) size of the block
(c) shape of the block
(d) All of these
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