Physics: Work, Power, Energy
Experiment 4: Work, Power and Energy
Arlie Bamiano, Jealine Marie Bernabe, Petrenne Clarice Caimbon, Jhia Caso
Department of Biological Sciences
College of Science, University of Santo Tomas
España, Manila Philippines
Abstract
The experiment deals primarily with computing the work done by gravity on each member in two scenarios (going up and down the stairs of the second floor and the third floor of the Main Building) wherein weight was also considered and following this, the power output of each member was also computed. Using the Logger Pro, the kinetic and potential energies of a ball in free fall were graphed and compared. At the end of the experiment, it was said that member #2 was the most “powerful” among the group since she had the highest power output both in going up and going down the stairs and in the second activity, the results were obtained and the predictions made were correct. 1. Introduction
Work, power and energy are three words that are commonly used in a man’s activity involving a force and movement in the direction of the force. Energy is the ability to do work. Power is the rate of doing work or the rate of using energy.
This experiment was designed to demonstrate the conservation of mechanical energy, to measure change in kinetic and potential energies as a ball moves in free fall and to determine power output when going up and down the stairs.
2. Theory This experiment is to studying work, power and energy. The following equations are used for certain unknowns in activity one.
F=mg
F stands for force. Mass (m) of the individual is multiplied to gravity (g). Gravity is equal to 9.8 m/s2.
W=Fd
W stands for work. F is for force solved from the previous equation and d stands for the distance traveled.
P=W/t
P stands for power. Work is divided to time (t) to obtain the value of power.
When a force acts upon an object to cause a displacement of the object, it is said that
Arlie Bamiano, Jealine Marie Bernabe, Petrenne Clarice Caimbon, Jhia Caso
Department of Biological Sciences
College of Science, University of Santo Tomas
España, Manila Philippines
Abstract
The experiment deals primarily with computing the work done by gravity on each member in two scenarios (going up and down the stairs of the second floor and the third floor of the Main Building) wherein weight was also considered and following this, the power output of each member was also computed. Using the Logger Pro, the kinetic and potential energies of a ball in free fall were graphed and compared. At the end of the experiment, it was said that member #2 was the most “powerful” among the group since she had the highest power output both in going up and going down the stairs and in the second activity, the results were obtained and the predictions made were correct. 1. Introduction
Work, power and energy are three words that are commonly used in a man’s activity involving a force and movement in the direction of the force. Energy is the ability to do work. Power is the rate of doing work or the rate of using energy.
This experiment was designed to demonstrate the conservation of mechanical energy, to measure change in kinetic and potential energies as a ball moves in free fall and to determine power output when going up and down the stairs.
2. Theory This experiment is to studying work, power and energy. The following equations are used for certain unknowns in activity one.
F=mg
F stands for force. Mass (m) of the individual is multiplied to gravity (g). Gravity is equal to 9.8 m/s2.
W=Fd
W stands for work. F is for force solved from the previous equation and d stands for the distance traveled.
P=W/t
P stands for power. Work is divided to time (t) to obtain the value of power.
When a force acts upon an object to cause a displacement of the object, it is said that
References: [1] Glambattista, Alan., College Physics: with an integrated approach to forces and kinematics, McGraw- Hill Higher Education, Boston, 2013 [2] Ewen, Dale., Applied Physics, Prentice Halle, Boston, 2012 [3] Norton, Robert L., Kinematics and dynamics of machinery, McGraw-Hill, Singapore, 2013