A block of mass \( M \) is placed on a fixed smooth inclined plane of inclination \( \theta \) w...

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A block of mass \( M \) is placed on a fixed smooth inclined plane of inclination \( \theta \) with the horizontal. The force exerted by the plane on the block has a magnitude
(a) \( \mathrm{Mg} \)
(b) \( M g / \cos \theta \)
(c) \( M g \cos \theta \)
(d) \( \operatorname{Mgtan} \theta \)
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