A Block of Mass M Slides Down a Frictionless Plane

question 11

Multiple Choice

A block of mass M slides down a frictionless plane inclined at an angle θ with the horizontal. The normal reaction force exerted by the plane on the block is

• A) Mg.
• B) Mg sin θ.
• C) Mg cos θ.
• D) Mg tan θ.
• E) zero, since the plane is frictionless.

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