Two alternative free-body diagrams are proposed for a sled being pulled up a rough…
PHYSICS · Subjective · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
Two alternative free-body diagrams are proposed for a sled being pulled up a rough incline at constant speed.
• Diagram A shows a single downward arrow labeled "weight," an arrow perpendicular to the surface labeled "normal," an arrow up the incline labeled "tension," and an arrow down the incline labeled "friction."
• Diagram B replaces the single weight arrow with two separate arrows: one perpendicular to the surface and one parallel to the surface, each labeled "weight component," while keeping the other forces identical.
Which diagram correctly represents the forces acting on the sled, and why?