Revision Checklist here for the Further Mechanics Section:
Section One – Further Mechanics
Momentum and Force
[INDENT]• Use the equation p=mv [/INDENT]
[INDENT]• Relate net force to rate of change of momentum in situations where the masses of the objects do not change (this is Newton's second law of Motion)[/INDENT]
Momentum and Collisions
[INDENT]• Apply the principle of conservation of linear momentum to problems involving objects moving along in a straight line[/INDENT]
[INDENT]• Derive and use the expression Ek=p^2/2m for the kinetic energy of particles (for particles moving much more slowly than the speed of light)[/INDENT]
[INDENT]• Use data to calculate the momentum of particles[/INDENT]
[INDENT]• Apply the principle of the conservation of linear momentum to problems in one and two dimensions
[INDENT]o (so you need to be able to resolve forces, and speeds, using trigonometry)[/INDENT][/INDENT]
[INDENT]• Explain the principle of the conservation of energy[/INDENT]
[INDENT][INDENT]o Energy cannot be created or destroyed. Energy can be transferred from one form to another but the total amount of energy in a closed system will not change.[/INDENT][/INDENT]
[INDENT]• Use the principle of the conservation of energy to determine whether a collision is elastic or inelastic[/INDENT]
[INDENT]o Work out the total kinetic energy before (Ek1) and after (Ek2) the collision. If Ek1=Ek2, the collision is elastic, as kinetic energy is conserved in elastic collisions. If Ek1>Ek2,the collision is not elastic, as energy has been transferred to forms other than kinetic.[/INDENT]
Circular Motion 1
[INDENT]• Express angular displacement in radians and in degrees , and convert between those units[/INDENT]
[INDENT]• Explain the concept of angular velocity[/INDENT]
[INDENT]• Use the relationships ν=ωr and Τ=2π/ω[/INDENT]
[INDENT]• Derive and use the expressions for centripetal acceleration a= ν2/r and a=rω2[/INDENT]
Circular Motion 2
[INDENT]• Explain that a resultant force (centripetal force) is required to produce and maintain circular motion.[/INDENT]
[INDENT]• Use the expression for centripetal force F=ma =mν2/r[/INDENT]