Question

Find the workdone by Akhil to roll the load up using an inclined plane.

• A. $600J$
• B. $200J$
• C. $400J$
• D. $1600J$

Answer 1

The correct option is D $1600J$

From FBD of load, the horizontal force is the required force to roll the load up the ramp.

i.e, $F=mg\sin \theta =800\times \left(AB/AC\right)=800\times \left(2/4\right)=400N$ (given $mg=800N$)

Thus required work done $W=F\times AC=400\times 4=1600J$