IB Physics SL A.2.3 Free-body Diagrams

Practise drawing isolated-body force diagrams with correctly labelled and directed forces for equilibrium, slopes, circular motion and falling objects.

Exam points

Draw free-body diagrams with every real force labelled and correctly directed.
Use force diagrams to distinguish equilibrium, friction, drag, tension and circular motion.

[Maximum number: 1]

A cylindrical cork of height H and cross-sectional area A is floating stationary in water. Its depth below the water surface is D.

Figure for Question A.2.3—Free-body diagrams question 1 — IB Physics SL

Draw and label the forces acting on the cork.

Weight and Buoyancy drawn in proper directions (by eye) and correctly identified

Allow any sensible identification of the forces (e.g. mg for $F_{g}$ )

Do not allow "gravity" for weight.

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A.2.3—Free-body diagrams question 1