Q. If a ladder weighing $250\ N$ is placed against a smooth vertical wall having coefficient of friction between it and floor is $0.3$, then what is the maximum force of friction available at the point of contact between the ladder and the floor
A) $75\ N$
B) $50\ N$
C) $35\ N$
D) $25\ N$
Explanation
(a) $F = \mu R = 0.3 \times 250 = 75\ N$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.