To determine the change in momentum of the
object, we will again use the impulse-momentum theorem:
Where:
is the change in momentum,
is the net force acting on
the object,
is the time interval over which
the forces act.
Calculate the forces acting on the object.
The object has the following forces acting
on it:
1. Gravitational force (weight): The weight
of the object is calculated using:
This force is acting downward.
2. Force : This force is upward.
3. Force : This force is downward.
Calculate the net force .
The net force is the sum of all forces,
considering their directions. We take upward forces as positive and downward
forces as negative: