what happens when multiple forces act on an object?

Question

anonymous · Answer

In Newtons laws we have two cases involving the Total force or Net Force:

If you have a net force -> You have acceleration 

If you do not have a net force -> No accerlation

A object can be standing still or moving at constant velocity with no forces acting on it.

anonymous · Answer

Newton states that in a inertial frame of reference the sum of all forces equals the mass of the object times it's acceleration.
This implies that the direction of the resultant force (Obtained by adding up all forces in vector form) gives you an acceleration in the same direction, with a magnitude given by the object's mass times the magnitude of the resultant force.

jmark · Answer

It Depends upon the nature of forces: "The object will always move"- If the resultant of all the forces is upwards. "The object will move if the forces are only balanced"- WRONG. "The object will move if the forces are unbalanced"- RIGHT. "The object will always stay in place"- If the resultant of all the forces is zero. This situation is called equilibrium Find more information on Gravitation Force at http://goo.gl/FDTbBb