How much work did Student B do?
Understand the Problem
The question is asking for the calculation of work done by Student B based on the force they applied and the distance moved. In physics, work is calculated as the product of force and distance, specifically when the motion is in the direction of the force. Since Student B moved the chair 0 meters, the work done is zero.
Answer
The work done by Student B is \( 0 \, \text{J} \).
Answer for screen readers
The work done by Student B is ( 0 , \text{J} ).
Steps to Solve
- Understand the formula for work done
Work done can be calculated using the formula: $$ W = F \cdot d $$ where ( W ) is the work done, ( F ) is the force applied, and ( d ) is the distance moved in the direction of the force.
- Identify the values for Student B
For Student B, the force applied is ( F = 20 , \text{N} ) and the distance moved is ( d = 0 , \text{m} ).
- Calculate the work done
Substituting the values into the work formula: $$ W = 20 , \text{N} \cdot 0 , \text{m} $$ Calculating this gives: $$ W = 0 , \text{J} $$
The work done by Student B is ( 0 , \text{J} ).
More Information
This result makes sense because work is only done when a force causes movement. Since Student B did not move the chair at all, the work done is zero regardless of the force applied.
Tips
- Confusing force with work: Some may think that applying a larger force results in more work, but if there's no movement, the work done is still zero.
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