Practice Free Body Diagram in Physics
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
A diagram that represents a single object and shows all external forces acting on it as labeled arrows.
A simplified picture that shows every push and pull acting on one isolated object.
Example 1
easyA 10 \text{ kg} box rests on a flat surface. Draw and label all forces in the free-body diagram. What are their magnitudes? Use g = 9.8 \text{ m/s}^2.
Example 2
mediumA 5 \text{ kg} block is pulled across a rough surface (\mu_k = 0.2) by a 30 \text{ N} horizontal force. List all forces in the free-body diagram and find the acceleration. Use g = 9.8 \text{ m/s}^2.
Example 3
mediumA 4 \text{ kg} block slides down a frictionless ramp inclined at 45°. Identify all forces in the free-body diagram and find the acceleration. Use g = 9.8 \text{ m/s}^2.
Example 4
hardA 6 \text{ kg} block hangs from two ropes: one horizontal (attached to a wall) and one at 60° above the horizontal (attached to the ceiling). Find the tension in each rope. Use g = 9.8 \text{ m/s}^2.