Yes, Soni is correct. An object can have zero acceleration even when multiple forces are acting on it, as long as the forces are balanced, meaning the net force acting on the object is zero. When the net force is zero, according to Newton’s first law of motion (law of inertia), the object will either remain at rest or continue moving at a constant velocity.
Explanation:
Net Force:
When several forces are acting on an object, the overall effect is determined by their combined or net force.
Balanced Forces:
If all the forces acting on an object perfectly cancel each other out, resulting in a net force of zero, the forces are considered balanced.
Newton’s First Law:
This law states that an object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by a net force.
Zero Acceleration:
When the net force is zero, there is no change in the object’s velocity, meaning the acceleration is also zero.
Example:
Imagine a book sitting on a table. Multiple forces are acting on the book:
Gravity: Pulling the book downwards.
Normal Force: The table pushing the book upwards.
If the magnitude of the normal force is exactly equal to the magnitude of the gravitational force, then the net force on the book is zero, and the book remains stationary (zero acceleration), even though multiple forces are present.