A drone propeller pushes air with a force

PHYSICS · Multi-part · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

A drone propeller pushes air with a force

\vec{F}_{\text{propeller}\to\text{air}} = 5\hat{i} + 4\hat{j} + 2\hat{k}\,\text{N}

, where

\hat{i}

,

\hat{j}

and

\hat{k}

are mutually perpendicular unit vectors. (a) Write the force vector exerted by the air on the propeller. (b) Calculate its magnitude.

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