9.1.1 The work-energy principle

1.1   1.1.1 Quantities

1.2   1.1.2 Quantities

1.3   1.2 Equations of constant acceleration

1.4   1.3.1 Displacement-time graph

1.5   1.3.2 Graphs

1.6   1.3.3 Graphs

1.7   1.3.4 Graphs with discontinuities

2.1   2.1 Newtons three laws

2.2   2.2 Combination of foces VID_20211018_110226

2.3   2.3 Weight and motion due to gravity

2.4   2.4 Normal contact force and motion in a vertical line_2

3.1   3.1 Resolving forces horizontally and vertically in equlibrium problems

3.2   3.2 Resolving forces in other angles in equilibrium problems

3.3   3.3 Non-equilibrium problems with known directions of acceleration_3

3.4   3.4 Non-equilibrium problems and finding resultant forces

4.1   4.1.1 Part of contact force

4.2   4.1.2 Part of contact force Example

4.3   4.1.3 Part of contact force Example

4.4   4.1.4 Part of contact force Example

4.5   4.2 Limit of friction

4.6   4.3 Change of direction of friction in different stages of motion-_3

5.1   5.1.1 Connected by rods

5.2   5.1.2 Connected by rods_Example1

5.3   5.1.3 Connected by rods_Example2

5.4   5.1.4 Connected by rods_Example3

5.5   5.2 Conneted by strings_4

5.6   5.3 Moving lifts

6.1   6.1 Velocity-V=ds%dt

6.2   6.2 Acceleration-derivative of velocity_

6.3   6.3 Displacement：integral of velocity

6.4   6.4 Velocity：integral of acceleration

7.1   7.1 Momentum

7.2   7.2 Collisions and conservation of momentum

8.1   8.1 Work done by a force

8.2   8.1.2 Work Example

8.3   8.2 Kinetic energy

8.4   8.3 Gravitational potential energy

9.2   9.1.2 worked Example

9.3   9.2.1 Conservation of energy in a system

9.4   9.2.2 Worked Example

9.5   9.3 Power