How Does Human Power Relate to Acceleration in Lifting 40kg Up 36m?

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SUMMARY

The discussion centers on calculating the work done when lifting a 40kg mass to a height of 36 meters. The work is calculated using the formula w = F × d, where F is the force (mass multiplied by gravitational acceleration) and d is the distance. The gravitational acceleration is approximated as 10m/s² for simplicity, although the more precise value is 9.81m/s². The total work done in this scenario is 14,400 Joules, illustrating the relationship between mass, force, and distance in lifting tasks.

PREREQUISITES
  • Understanding of basic physics concepts such as work and force.
  • Familiarity with gravitational acceleration, specifically 9.81m/s².
  • Knowledge of the formula f = ma (force equals mass times acceleration).
  • Basic arithmetic skills for calculating work done in lifting scenarios.
NEXT STEPS
  • Research the implications of gravitational acceleration variations in different environments.
  • Learn about the efficiency of human power in lifting tasks and its limitations.
  • Explore advanced physics concepts related to work-energy principles.
  • Investigate real-world applications of lifting calculations in engineering and ergonomics.
USEFUL FOR

This discussion is beneficial for physics students, engineers, fitness trainers, and anyone interested in understanding the mechanics of lifting and human power dynamics.

Phadgebar
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about human power??

consider the worker needs to bring up 40kg, the floor is about 36m so the work done is
w = (40kg) (10m/s^2) (36m)
w = 14 400J

i don't know what's the (10m/s^2) for??
 
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Work is force times distance. If you only use 40kg x 36m, you're multiplying mass times distance.

Mass and force are two different concepts. You need gravity in order for mass to have a force. In order to figure out how much force that mass is applying, you need to multiply it by the acceleration due gravity, which in any case on the planet Earth is close to 10m/s^2...although closer to 9.81, which is what we typically use.
 
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