OnlineCBT
Physics · LAWS OF MOTION
हिन्दीA book of mass \( 1.5 \text{ kg} \) rests on a smooth horizontal table. Taking \( g = 9.8 \text{ m s}^{-2} \), what is the magnitude of the normal reaction force exerted by the table on the book?
Correct answer · Option 3
\( 14.7 \text{ N} \)
Explanation
For vertical equilibrium of the book, the upward normal reaction balances the weight: \( R = mg = 1.5 \times 9.8 = 14.7 \text{ N} \).
