Pushing an object up an inclined plane affects acceleration by introducing an additional force opposing the object's motion. The object experiences both gravitational force pulling it downward and a normal force perpendicular to the plane's surface. When you push the object up the inclined plane, you apply a force parallel to the plane's surface, opposing the force of gravity.
In the absence of friction, the acceleration of the object on an inclined plane can be determined using the following equation:
a = (F_parallel - F_gravity) / m
Where: a is the acceleration of the object F_parallel is the component of the applied force parallel to the plane's surface F_gravity is the gravitational force acting on the object (m * g, where m is the mass and g is the acceleration due to gravity) m is the mass of the object
When you push the object up the inclined plane, the applied force F_parallel is greater than the gravitational force F_gravity since you are counteracting its downward pull. As a result, the net force (F_parallel - F_gravity) acting on the object is in the direction of motion up the incline.
Therefore, the acceleration of the object will be positive, indicating that it is moving up the inclined plane. The magnitude of the acceleration depends on the ratio between the applied force and the gravitational force, as well as the mass of the object. The greater the applied force relative to the gravitational force, the greater the acceleration will be.
However, it's important to note that the presence of friction between the object and the inclined plane can affect the object's acceleration. Friction opposes the motion and can reduce the acceleration or even cause the object to come to a stop if the friction force is strong enough.