Explain whether work is done in each of the following scenarios: swimming, a donkey carrying a load, a windmill lifting water, photosynthesis, a train pulled by an engine, food gra... Explain whether work is done in each of the following scenarios: swimming, a donkey carrying a load, a windmill lifting water, photosynthesis, a train pulled by an engine, food grains in sunlight, and wind energy on a sailboat.
Understand the Problem
The text describes various scenarios involving the application of force and the concepts of work and displacement in physics. It evaluates whether work is done in each situation based on the presence or absence of displacement in the direction of the applied force.
Answer
Work is done in swimming, windmill lifting water, train pulling, and wind on a sailboat.
Work is done when swimming, a windmill lifting water, a train pulled by an engine, and wind energy on a sailboat. No work is done for a donkey carrying a load, photosynthesis, and food grains in sunlight.
Answer for screen readers
Work is done when swimming, a windmill lifting water, a train pulled by an engine, and wind energy on a sailboat. No work is done for a donkey carrying a load, photosynthesis, and food grains in sunlight.
More Information
In physics, work requires both force and displacement in the direction of the force. Common situations involve assessing whether both conditions are met.
Tips
A common mistake is neglecting the importance of displacement in the direction of the applied force when determining if work is done.
Sources
- Look at the activities listed below. Reason out whether or not work is done - vedantu.com
- Reason out whether work is done - toppr.com
