Tsokos 2-3 The concept of force. IB Assessment Statements. 2.2.1 Calculate the weight of a body using the expression W = mg. 2.2.2 Identify the forces acting on an object and draw free-body diagrams representing the forces acting.
2.2.1 Calculate the weight of a body using the expression W = mg.
2.2.2 Identify the forces acting on an object and draw free-body diagrams representing the forces acting.
2.2.3 Determine the resultant force in different situations.
2.2.4 State Newton’s first law of motion.
2.2.5 Describe examples of Newton’s first law.
2.2.6 State the condition for translational equilibrium.
2.2.7 Solve problems involving translational equilibrium.
2.2.8 State Newton’s second law of motion.
2.2.9 Solve problems involving Newton’s second law.
2.2.10 Define linear momentum and impulse.
2.2.11 Determine the impulse due to a time-varying force by interpreting a force-time graph.
2.2.12 State the law of conservation of linear momentum.
2.2.13 Solve problems involving momentum and impulse.
2.2.14 State Newton’s third law of motion.
2.2.15 Discuss examples of Newton’s third law.
State the difference between mass and weight
Define gravitational field strength and give its units (N/kg, or m/s2)
Draw vectors representing forces acting on a given body
Identify situations in which frictional forces develop and draw those frictional forces
Use Hooke’s law correctly, T = kx
Mass is the amount of material in a body whose SI unit is kilograms
Force can stretch, deform, rotate, compress, or produce an acceleration on a body
The gravitational force is expressed as weight (ma=Ff)
While the gravitational force keeps things from floating away, the normal force prevents things from plunging into the center of the earth
Question I Can’t Answer:
Why is it that the strong nuclear force keeps subatomic particles inside atomic particles, while the electroweak force accelerates several ton cars filled with passengers to high speed at amusement parks?
May the force be with you!