(a) Draw a clear free–body diagram for a block of mass resting on a smooth fixed…
PHYSICS · Subjective · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
(a) Draw a clear free–body diagram for a block of mass m resting on a smooth fixed plane that is inclined at an angle θ to the horizontal.
(b) Resolve the weight of the block into two mutually perpendicular components relative to the plane and name each component.
(c) Explain how the magnitude of the normal reaction offered by the plane varies with the angle θ. What values does it approach when θ→0∘ and when θ→90∘?
(d) If the same block is placed on a rough plane (coefficient of static friction μs) and the angle of the plane is gradually increased from 0∘, qualitatively describe the sequence of forces acting on the block up to the instant just before it starts sliding.