An object of mass 80kg is pulled on a horizontal rough ground by a force of 500N. Find the coefficient of static friction

John Perolski
September 03, 2023

 Physics Jamb, Waec, Neco Past Questions & Answers on FRICTIONAL FORCE


QUESTIONS 13: An object of mass 80kg is pulled on a horizontal rough ground by a force of 500N. Find the coefficient of static friction. (g.= 10m/s²) 

A 0.8 

B. 0.4 

C. 1.0 

D. 0.6 

JAMB 2009" Ans: D

coefficient of friction = FR

μ = Fmg

μ = 500 (80×10)

μ= 0.625