Q.
A horizontal force $F$ is applied on a block mass $m$ placed on a rough inclined plane of inclination $\theta$. The normal reaction $N$ is
A) $mg\cos\theta$
B) $mg\sin\theta$
C) $mg\cos\theta - F\cos\theta$
D) $mg\cos\theta + F\sin\theta$
Explanation
(d) As is clear from figure
[image:5_image281.emf]
$R = mg\cos{\theta + F\sin\theta}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.