object changes, then the object is accelerating in
some manner. A net acceleration implies that there
is a net force acting on the object. If the net force
acting on an object is 0, then the object is in
translational equilibrium.
To determine whether the net force is 0, the
force vectors must be added either as a vector sum
or by components. If an object is in translational
equilibrium, it is said to satisfy the first
condition of equilibrium.
An object is in rotational equilibrium if
the net torque acting on the object is 0. If the net
torque is 0, then the object satisfies the second
condition of equilibrium.
Example:
A painter needs to use a ladder to reach the second floor of the house she is painting. Another painter holds the ladder while she climbs. The coefficient of static friction