Experiment 4: Work, Power, and Energy
Laboratory Report
Department of Biological Sciences
College of Science, University of Santo Tomas
España, Manila Philippines
Abstract energy is the energy that is contained in an
object and is determined by the amount of
This experiment deals with different work that is required to release it.
applications of work, energy and power. Two Furthermore, energy cannot be generated or
(2) experiments were performed virtually and destroyed, according to the Law of
onsite wherein each member of the group Conservation of Energy. However, it is
were tasked to ascend and descend between capable of transformation. With this, an
floors while the other experiment involved isolated system’s total energy is constant
tossing a ball to be able to determine its regardless of the types of energy present. In
kinetic, potential, and total mechanical addition, power can be defined as the amount
energy. Results showed that one of the of work completed in a given amount of time.
members of the group exerted the most force It is a scalar quantity with Watt (W) as its
within the least time. Additionally, corresponding unit. According to Urone et. al
relationships between the different energies (2020), energy and work go hand in hand.
abovementioned were assessed via graph When one exerts work to move an object, the
comparison. energy of that object changes.
1. Introduction In this experiment, the students' aim was
to better understand the important concepts of
Fundamental ideas in physics include work, energy, and power along with their
work, energy, and power. When a force (push significance and their applications in real-life
or pull) given to an item results in the situations. Specifically, it aimed to:
displacement of the object, that force is said ● identify each proponent's power
to have performed work. Furthermore, work output when walking up and down the
is dependent on two variables. They are the stairs;
force’s magnitude and the direction in which ● exhibit the conservation of mechanical
the body moves as a result of the force being energy by tossing a ball; and
applied. Which is why work is calculated as ● evaluate the changes in kinetic and
the sum of a body’s displacement and force, potential energy when the ball is in
combined with the force’s direction of free fall.
application.
Work is considered as a scalar quantity, and
Joule (J) is the corresponding SI unit. 2. Theory
Consequently, the ability to perform the Table 1. Formulas for Work, Power, and
work is defined as energy. All energy is either Energy
kinetic or potential. Kinetic energy is the
Value Formula
energy that is in motion, while potential
, ● KE = Kinetic
W =Fdcosθ energy
● m = mass
Where: ● v = velocity
● W = work
Work
● F = force
● d= ME=U +KE
displacement
● θ = angle Where:
between
force and Mechanical energy ● M.E =
displacement Mechanical
energy
● U = Potential
W energy
P=
t ● KE = Kinetic
energy
Power Where:
Table 1 displays the necessary formulas
● P = power in order to compute for work, power, and
● W = work energy. Firstly, is the formula for work in
● t = time which the amount of work performed by a
force is calculated by multiplying its
U =mgh component in the displacement’s direction by
its magnitude. Next is the power which is
Where: considered as the rate of work completion.
Consequently, it can be determined by
● U = Potential dividing work completed by time.
energy Furthermore, for potential energy, it is
Potential energy ● m = mass dependent on the force acting between two
● g= objects. While for the kinetic energy, there is
acceleration a direct relationship between an object’s mass
due to and the square of its velocity. Lastly is the
gravity (9.8 formula for mechanical energy wherein it is
m/s2) the sum of the combined kinetic and potential
● h = height energy of an object used to perform a certain
task.
Kinetic energy
1 2 3. Methodology
KE= m v
2
Materials and Instrumentation
Where: The materials used for the virtual
experiment were a tape measure and timer.
Laboratory Report
Department of Biological Sciences
College of Science, University of Santo Tomas
España, Manila Philippines
Abstract energy is the energy that is contained in an
object and is determined by the amount of
This experiment deals with different work that is required to release it.
applications of work, energy and power. Two Furthermore, energy cannot be generated or
(2) experiments were performed virtually and destroyed, according to the Law of
onsite wherein each member of the group Conservation of Energy. However, it is
were tasked to ascend and descend between capable of transformation. With this, an
floors while the other experiment involved isolated system’s total energy is constant
tossing a ball to be able to determine its regardless of the types of energy present. In
kinetic, potential, and total mechanical addition, power can be defined as the amount
energy. Results showed that one of the of work completed in a given amount of time.
members of the group exerted the most force It is a scalar quantity with Watt (W) as its
within the least time. Additionally, corresponding unit. According to Urone et. al
relationships between the different energies (2020), energy and work go hand in hand.
abovementioned were assessed via graph When one exerts work to move an object, the
comparison. energy of that object changes.
1. Introduction In this experiment, the students' aim was
to better understand the important concepts of
Fundamental ideas in physics include work, energy, and power along with their
work, energy, and power. When a force (push significance and their applications in real-life
or pull) given to an item results in the situations. Specifically, it aimed to:
displacement of the object, that force is said ● identify each proponent's power
to have performed work. Furthermore, work output when walking up and down the
is dependent on two variables. They are the stairs;
force’s magnitude and the direction in which ● exhibit the conservation of mechanical
the body moves as a result of the force being energy by tossing a ball; and
applied. Which is why work is calculated as ● evaluate the changes in kinetic and
the sum of a body’s displacement and force, potential energy when the ball is in
combined with the force’s direction of free fall.
application.
Work is considered as a scalar quantity, and
Joule (J) is the corresponding SI unit. 2. Theory
Consequently, the ability to perform the Table 1. Formulas for Work, Power, and
work is defined as energy. All energy is either Energy
kinetic or potential. Kinetic energy is the
Value Formula
energy that is in motion, while potential
, ● KE = Kinetic
W =Fdcosθ energy
● m = mass
Where: ● v = velocity
● W = work
Work
● F = force
● d= ME=U +KE
displacement
● θ = angle Where:
between
force and Mechanical energy ● M.E =
displacement Mechanical
energy
● U = Potential
W energy
P=
t ● KE = Kinetic
energy
Power Where:
Table 1 displays the necessary formulas
● P = power in order to compute for work, power, and
● W = work energy. Firstly, is the formula for work in
● t = time which the amount of work performed by a
force is calculated by multiplying its
U =mgh component in the displacement’s direction by
its magnitude. Next is the power which is
Where: considered as the rate of work completion.
Consequently, it can be determined by
● U = Potential dividing work completed by time.
energy Furthermore, for potential energy, it is
Potential energy ● m = mass dependent on the force acting between two
● g= objects. While for the kinetic energy, there is
acceleration a direct relationship between an object’s mass
due to and the square of its velocity. Lastly is the
gravity (9.8 formula for mechanical energy wherein it is
m/s2) the sum of the combined kinetic and potential
● h = height energy of an object used to perform a certain
task.
Kinetic energy
1 2 3. Methodology
KE= m v
2
Materials and Instrumentation
Where: The materials used for the virtual
experiment were a tape measure and timer.
