A particle on a rough slope inclined at is on the point of slipping down. What is the coefficient of friction?

Answer and explanation

Correct answer: D. 0.47

  1. Step 1: In limiting equilibrium, with and . Step 2. , which rounds to 0.47. Answer: 0.47. Why not the others: 0.42 is ; 0.91 is ; 2.14 is , from using the wrong angle.

Practise more Kinematics and forces (mechanics).

Free questions with an explanation for every one, and full timed A-Level UK (AQA, Edexcel, OCR) mock tests.

A particle on a rough slope… | A-Level UK (AQA, Edexcel, OCR)