Forces, density and pressure – CIE AS Level Physics 9702


  • Types of force
    1. describe the force on a mass in a uniform gravitational field and on a charge in a uniform electric field
    2. understand the origin of the upthrust acting on a body in a fluid
    3. show a qualitative understanding of frictional forces and viscous forces including air resistance (no treatment of the coefficients of friction and viscosity is required)
    4. understand that the weight of a body may be taken as acting at a single point known as its centre of gravity
  • Turning effects of forces
    1. define and apply the moment of a force
    2. understand that a couple is a pair of forces that tends to produce rotation only
    3. define and apply the torque of a couple
  • Equilibrium of forces
    1. state and apply the principle of moments
    2. understand that, when there is no resultant force and no resultant torque, a system is in equilibrium
    3. use a vector triangle to represent coplanar forces in equilibrium
  • Density and pressure
    1. define and use density
    2. define and use pressure
    3. derive, from the definitions of pressure and density, the equation Δp = ρgΔh
    4. use the equation Δp = ρgΔh

Video (2:06:53 mins)

Free Preview

Premium Content :

Only paid customers can view this, you can purchase this HERE
If you have paid for this course please log in.
For more information please contact us.