Mike applied 10 N of force over 3 m in 10 seconds. Joe applied the same force over the same distance in 1 minute. Who did more work?
  1. both did the same work
  2. both did zero work
  3. Mike
  4. Joe


 For Mike:

Applied force $F=10\ N$

Displacement $d=3\ m$

Therefore, work done by Mike $W_{Mike}=Fd=10\ N\times3\ m$

$=30\ J$

For Joe:

Force $F=10\ N$

Displacement $d=3\ m$

Therefore, work done by Joe $W_{Joe}=10\ N\times3\ m=30\ J$

Therefore, the work done is the same.

Therefore, option a). is correct.

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Updated on: 10-Oct-2022

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