Examkin

Soru

Zorluk: KolayNewton's First Law (Inertia)

A mechanic attempts to push a heavy, stationary tool cabinet mounted on well-lubricated casters across a level garage floor. Despite the low friction, it requires a significant initial effort from the mechanic just to get the cabinet moving. Which concept best explains why the cabinet resists this initial change in its state of rest?

  1. The cabinet's inertia, which naturally opposes any change to its state of motion.Cevap
  2. B
    An equal and opposite reaction force generated by the cabinet actively pushing back.
  3. C
    The cabinet's total weight, which must be completely overcome to move it horizontally.
  4. D
    The large surface area of the casters, which creates a high static frictional force.

Cevap

The concept that best explains the resistance is the cabinet's inertia, which naturally opposes any change to its state of motion.
The correct answer accurately identifies inertia as the property of matter that resists any change in its state of motion. Because the cabinet has a large mass, its inertia is high, requiring a significant unbalanced force to accelerate it from rest, regardless of how low the friction is.

Adım Adım Çözüm

1
Analyze the conditions given in the scenario.
The cabinet is heavy (large mass) and rests on well-lubricated casters (low friction).
Identifying the forces at play helps rule out friction as the primary cause of resistance.
2
Identify the relevant mechanical principle.
The resistance to a change in motion (from rest to moving) is called inertia, governed by Newton's First Law.
Matching the physical behavior to the correct physical law determines the correct answer.

Anahtar Kavram

Newton's First Law of Motion (Inertia)
Bu soruyu puanla

Konular

Newton's First Law (Inertia)

Bu konudan daha fazla soru