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) //

RP
Answered by Richard P. Physics tutor

1307 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

A child is going down a snowy hill on a sledge. Draw a free-body force diagram for the child and sledge.


What is the angular speed of a car wheel of diameter 0.400m when the speed of the car is 108km/h?


Show that the radius of an orbit may be expressed as follows: R^3=((GM)/4*pi^2)T^2


Describe how a capacitor works.


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