Using Moments - Equilibrium What happens with moments if a rigid body is in equilibrium? If a rigid body is in equilibrium then: The resultant force is 0 N The resultant moment about any poi...
Moments Diagrams When an object is modelled as a particle we do not need to consider the rotation of the object due to forces. When we model an object as a rigid body then we need to consid...
Coefficient of Friction - Equilibrium How is friction used when a body is in equilibrium? When a body is in static equilibrium under the action of a number of forces, including friction, the...
Coefficient of Friction - Inclined Planes How is the coefficient of friction used in problems involving inclined planes? On an inclined plane the basic principles are the same as for coeffic...
Coefficient of Friction - F = ma How do we apply Newton’s Second Law (F = ma) in problems involving friction? The coefficient of friction combined with F = ma allows you to determine an obje...
Coefficient of Friction What is friction? Friction is a force between a surface and an object that acts to resist motion of the object across the surface On a horizontal surface with no forc...
Resolving Forces If a single force is applied at an angle to the direction of motion it will need to be resolved into components of the force that act perpendicular to each other. Why resol...
F = ma - Vector Notation How is Newton’s Second Law (N2L) used with vectors? The resultant force (F) and acceleration (a) are vectors For forces and motion in two dimensions, F N and a m s-2...
Connected Bodies - Pulleys What is a pulley (or peg)? A pulley is a wheel like device that rotates as a string passes over it allowing motion of any particles attached to the string Pulleys ...
