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Forces acting on objects can be represented using force diagrams. A force diagram uses labeled arrows, with the direction of each arrow indicating the direction of a force and the length proportional to its magnitude. Forces include weight, thrust, upthrust, friction, air resistance, and for a falling ball initially, weight and air resistance are the key forces shown in its force diagram.
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- 1. How can forces be represented?
- 2. A force diagram uses labelled arrows to show all the forces acting on the object. How can forces be represented? The forces acting on any object can be shown using a force diagram.
- 3. The direction of each arrow shows the direction of each force. A force diagram uses labelled arrows to show all the forces acting on the object. How can forces be represented? The forces acting on any object can be shown using a force diagram. The length of each arrow is proportional to the size of the force.
- 4. The direction of each arrow shows the direction of each force. A force diagram uses labelled arrows to show all the forces acting on the object. What is the force diagram for this ball when it first starts to fall? How can forces be represented? The forces acting on any object can be shown using a force diagram. The length of each arrow is proportional to the size of the force.
- 5. The direction of each arrow shows the direction of each force. A force diagram uses labelled arrows to show all the forces acting on the object. What is the force diagram for this ball when it first starts to fall? air resistance weight How can forces be represented? The forces acting on any object can be shown using a force diagram. The length of each arrow is proportional to the size of the force.
- 6. The direction of each arrow shows the direction of each force. A force diagram uses labelled arrows to show all the forces acting on the object. What is the force diagram for this ball when it first starts to fall? air resistance weight How can forces be represented? The forces acting on any object can be shown using a force diagram. The length of each arrow is proportional to the size of the force. Forces are measured in newtons (N)
- 7. What forces are acting on this fish as it swims at a constant speed? What forces act on a swimming fish?
- 8. thrust What forces are acting on this fish as it swims at a constant speed? friction weight upthrust What forces act on a swimming fish?
- 9. thrust What forces are acting on this fish as it swims at a constant speed? friction Thrust is the forwards force created by the fish. Upthrust is the upwards force on the fish caused by the water around the fish. This is sometimes called buoyancy. weight upthrust What forces act on a swimming fish?
- 10. What forces are acting on this accelerating boat? What forces act on a moving boat?
- 11. What forces are acting on this accelerating boat? What forces act on a moving boat? thrust friction weight upthrust air resistance
- 12. What forces are acting on this accelerating boat? What forces act on a moving boat? thrust friction weight upthrust air resistance Air resistance is friction caused by movement through air.