Which barbell would be harder to move?

If all the barbells above were pushed with a force of 100 newtons, which would be harder to move?

O The 10-kg barbell

O The 20-kg barbell

O The 30-kg barbell

O They would all move equally

Answer:

The 30-kg barbell would be harder to move because it has the greatest mass.

In order to determine which barbell would be harder to move, we need to consider the concept of inertia. Inertia is the resistance an object has to changes in its motion. It depends on the mass of the object, with greater mass leading to greater inertia.

As per Newton's Second Law of Motion, the force required to move an object is directly proportional to its mass. In this case, the barbell with the greatest mass, which is the 30-kg barbell, would be harder to move.

The force required to move an object can be calculated using the equation:

Force = Mass x Acceleration

Since the force applied is the same (100 newtons), the acceleration would be less for the barbell with greater mass, making it harder to move compared to the other barbells.