You can't directly find the "output force" of an object. The concept of "output force" isn't a standard physics term. Instead, you need to be more specific about what you're trying to determine.

Here's how you can approach finding forces depending on the situation:

1. If you're dealing with a simple machine:

* Lever: Output force is calculated by multiplying the input force by the mechanical advantage.

* Mechanical advantage: Ratio of the output force to the input force. For a lever, it's the ratio of the lengths of the lever arms.

* Pulley: Output force is equal to the input force multiplied by the number of supporting ropes.

* Wheel and axle: Output force is calculated by multiplying the input force by the ratio of the radius of the wheel to the radius of the axle.

2. If you're dealing with a system where forces are acting on an object:

* Newton's Second Law: This law states that the net force acting on an object is equal to its mass multiplied by its acceleration.

* F_net = m * a

* Free body diagram: This is a diagram that shows all the forces acting on an object. You can use it to determine the net force.

3. If you're looking for the force exerted by an object:

* Contact forces: These forces are caused by direct contact between objects. Examples include friction, normal force, and tension.

* Non-contact forces: These forces act at a distance. Examples include gravity, electromagnetic forces, and nuclear forces.

To find the force exerted by an object, you need to know:

* The type of force: What type of force is being exerted?

* The object's properties: Mass, acceleration, velocity, etc.

* The environment: Are there other forces acting on the object?

Example:

Let's say you want to find the force exerted by a car accelerating from rest.

* Type of force: The force exerted by the car's engine.

* Object's properties: The car's mass and acceleration.

* Environment: Neglecting air resistance and friction.

Using Newton's Second Law (F_net = m * a), you can find the force exerted by the car's engine.

In conclusion:

You need to be specific about what you're looking for. The term "output force" is ambiguous. By defining the situation and the type of force you want to find, you can use the appropriate physics principles to determine the force.