1. Gravitational force (downward), Normal force (upward). Equal magnitude, opposite direction. Net force = 0.
2. Gravitational force (downward), Normal force (upward). Equal magnitude, opposite direction. Net force = 0.
3. Gravitational force (downward), Normal force (upward), Frictional force (opposite to motion, left). Net force points left (deceleration).
4. Gravitational force (downward), Normal force (perpendicular to incline, upward). Net force parallel to incline, downward (acceleration).
5. Gravitational force (downward), Normal force (perpendicular to incline, upward), Static friction (up the incline). Net force = 0.
6. Gravitational force (downward), Tension (upward). Equal magnitude, opposite direction. Net force = 0.
7. Gravitational force (downward), Two tension forces (along ropes, upward and outward). Vector sum of tensions equals gravity. Net force = 0.
8. Gravitational force (downward), Normal force (horizontal, away from wall), Tension (upward and left, along rope). Vector sum of normal and tension balances gravity. Net force = 0.
9. Gravitational force (downward), Normal force (perpendicular to incline, upward), Static friction (up the incline). Net force = 0.
10. Gravitational force (downward), Normal force (perpendicular to incline, upward), Applied force (up the incline, horizontal component shown), Static friction (down the incline). Net force = 0.
Parent Tip: Review the logic above to help your child master the concept of force diagrams worksheet.
