A Horizontal Force Is Used to Push an Object $\theta$

question 3

Multiple Choice

A horizontal force is used to push an object of mass m up an inclined plane.The angle between the plane and the horizontal is $\theta$ .The normal reaction force of the plane acting on the mass m is

• A)mg cos \(\theta\) + F cos \(\theta\)
• B)mg cos \(\theta\)
• C)mg cos \(\theta\) + F sin\(\theta\)
• D)mg cos \(\theta\) - F cos \(\theta\)
• E)impossible to determine because the coefficient of friction is not given.

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