SUMMARY
The work done by the weight of a box when pushed horizontally is zero because the weight acts vertically downward, while the applied force and displacement are horizontal. In this scenario, a box weighing 100N is pushed with a force of 40N over a distance of 2m, resulting in 80N of work done by the applied force. The concept of work in physics is defined as the product of force and displacement in the direction of the force, which explains why the vertical weight does not contribute to work in this case.
PREREQUISITES
- Understanding of vector quantities in physics
- Knowledge of the work-energy principle
- Familiarity with Newton's laws of motion
- Basic grasp of force, displacement, and their relationship
NEXT STEPS
- Study the work-energy theorem in classical mechanics
- Learn about vector decomposition in physics
- Explore scenarios involving inclined planes and their effects on work
- Investigate the role of friction in work done on objects
USEFUL FOR
Students studying physics, educators teaching mechanics, and anyone interested in understanding the principles of work and energy in physical systems.