A ball mass 2kg rests on a slope of angle 60 degrees. If it is stationary, calculate the coefficient of static friction

Because the ball is stationary, the sum of the forces acting on it must be equal to 0. We can split the ball's weight into two components: perpendicular and parallel to the slope.W(para)=2gsin60W(perp)=2gcos60The frictional force is equal to the coefficient of friction multiplied by the normal reaction force. We know this reaction force, N, must balance W(perp)N=W(perp)=2gcos60Since the frictional force (F=uN) must be equal to W(para), we can find the coefficient of friction by dividing W(para) by N, to give u=tan60

ME
Answered by Milo E. Physics tutor

1444 Views

See similar Physics IB tutors

Related Physics IB answers

All answers ▸

What is Olbers' paradox?


What's the value of the normal force of a vehicle on a convex bridge? What about a concave one?


What is the difference between the centripetal acceleration and the centrifugal force?


what is the derivative of x?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences