To determine which option has the greatest magnitude of force needed to lift, we can consider the weight of each item:
A. The force needed to lift a hairbrush
B. The force needed to lift a chair
C. The force needed to lift a pencil
D. The force needed to lift a textbook
Generally, the weight of these items (and thus the force needed to lift them due to gravity) can be ranked as follows (from lightest to heaviest):
- A hairbrush (typically very light)
- A pencil (also quite light but slightly more than a hairbrush)
- A textbook (can vary, but typically heavier than a hairbrush or pencil)
- A chair (generally the heaviest among these options)
Therefore, the force with the greatest magnitude needed to lift one of these items would likely be B. the force needed to lift a chair.