A body of mass 100 g is sliding from an inclined plane of i…

Physics Friction Motion on Inclined Surface Single Correct MCQ

Published on: September 12, 2026

A body of mass 100 g is sliding from an inclined plane of inclination 30°. What is the frictional force experienced if µ = 1.7

$1.7 \times \sqrt{2} \times \frac{1}{\sqrt{3}} \mathrm{N}$

$1.7 \times \sqrt{3} \times \frac{1}{2} \mathrm{N}$

$1.7 \times \sqrt{3} \, N$

$1.7 \times \sqrt{2} \times \frac{1}{3} N$

Text Solution

Verified by Experts

The correct answer is:

$F_k = \mu_k R = \mu_k mg \cos \theta$

$F_k = 1.7 \times 0.1 \times 10 \times \cos 30^\circ = 1.7 \times \frac{\sqrt{3}}{2} \mathrm{N}$

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