A horizontal force acting on a block of ...

A horizontal force acting on a block of mass `m` which is placed on an inclined plane (as shown in the figure). What is the normal reaction `N` on the block?

`gm sin theta + f cos theta `

`mg sin theta - F cos theta `

`mg cos theta - F sin theta`

`mg cos theta + f sin theta`

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The correct Answer is:

from the figure the normal reaction on the block is
` N= mg cos theta + Fsin theta `

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