Question

The figure shows a horizontal force $\overrightarrow{F}$ acting on a block of mass $M$ on an inclined plane (angle $\theta )$. What is the normal reaction $N$ on the block?

• A. $mg\sin \theta +F\cos \theta$
• B. $mg\sin \theta -F\cos \theta$
• C. $mg\cos \theta -F\sin \theta$
• D. $mg\cos \theta +F\sin \theta$

Answer 1

The correct option is D $mg\cos \theta +F\sin \theta$

From the figure, the normal reaction on the block is $N=mg\cos \theta +F\sin \theta$.