A wooden block of mass is kept at rest on a rough plane that makes an angle with the…
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A wooden block of mass 2kg is kept at rest on a rough plane that makes an angle θ with the horizontal. Answer the following with reference to the block–plane system.
(i) Draw a clear and labelled free-body diagram of the block, choosing axes along and perpendicular to the plane.
(ii) Resolve the weight of the block into components parallel and perpendicular to the plane and write the expressions for these components.
(iii) Explain the difference between static friction and kinetic friction acting on the block. State the condition under which the block will be on the verge of sliding down the plane.