Solved: PHYSICS Question for NEET

NEET PHYSICSEasy

It is easier to draw up a wooden block along a smooth inclined plane than to haul it vertically, principally because:

The friction is reduced

The mass becomes smaller

Only a part of the weight has to be overcome

‘g’ becomes smaller

Vertical Lifting: To lift a block of mass $m$ vertically upwards, the applied force $F_{vertical}$ must oppose the full force of gravity (weight). Thus, $F_{vertical} = mg$ .
Inclined Plane: On a smooth inclined plane making an angle $\theta$ with the horizontal, the weight $mg$ is resolved into two components:

Comparison: The force required to pull the block up the smooth incline is $F_{incline} = mg \sin \theta$ [Source 72].
Conclusion: Since $\sin \theta < 1$ for any acute angle, $F_{incline} < F_{vertical}$ . The effort is reduced because only the component (part) of the weight ( $mg \sin \theta$ ) needs to be overcome, not the entire weight ( $mg$ ). Mass and $g$ remain constant.

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