A block of mass m is released from rest on a surface inclined at 30⁰ to the horizontal with a coefficient of friction of 0.3. How long does it take for the block to slide 1 m?

Firstly, a free-body diagram of the problem should be drawn indicating the forces acting on the block (remember that the friction force is the product of the normal reaction on the block and the coefficient of friction). Next, the resultant force acting on the block parallel to the slope should be found and substituted into the equation F = ma: m.g.sin(30) - 0.3.m.g.cos(30) = ma a = 2.356 ms-2 Now the time to travel 1 m can be calculated using SUVAT (or integration and applying boundary conditions). s = ut +0.5at2 1 = 0 + 1.178t2 t = 0.921 s (3dp) //

Answered by Richard P. Physics tutor

1261 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

Define light, critical and heavy damping in simple harmonic motion.


A rocket travels with constant velocity in a straight line in deep space. A ball is thrown from the back to the front (ie from the thrusters to the nose). Describe the path of the ball. Describe the path if the rocket were accelerating along this line.


Explain Newton’s law of Gravitation


What is Newtons third law of motion?


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