PRELIMS: PHYSICS FOR ENGR. LAB
MATRIZ, RAINIE STEFANIE | BSCE-1C | 2ND SEMESTER | 2022-2023
ACT. 1 FAMILIARIZATION OF
LABORATORY
MATERIALS/EQUIPMENTS
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VECTOR- can be specified by
magnitude and direction.
- Ex. spatial displacement,
force and velocity
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RESULTANT FORCE- single force
that represents the effects of all the
other forces acting on an object.
EQUIPMENTS/MATERIALS
1. FORCE TABLE (PASCO)
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Tool used
a to determine the
equilibrium and measure the
effects of vector quantities.
Tool for demonstrating Newton’s
First Law of Motion
2. TENSION PROTRACTOR (PASCO)
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It is a tool that combines a
protractor with a spring scale. The
rotary dial reads the angle where
the string crosses the degree scale
on the outer ring, making it ideal
for studies involving static
equilibrium and string tension.
3. ATWOOD MACHINE
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Device used for illustrating
fundamental
dynamics
and
acceleration laws. It consists of
string, pulley and a system of
masses.
Ex. temperature, mass,
volume and time intervals.
THREE PROCESS ON HOW TO GET
THE RESULTANT VECTOR
Graphical Process- polygon method.
Drawing process according to the
measured scale of vectors.
Analytical Process- process of adding
vectors using trigonometry to express
each vector in terms of its component
projected on the axes of a rectangular
coordinate system.
Experimental Process- process of
getting a resultant vector using the device
called the force table. In which, the force
table provides a force from the
gravitational
attraction
on
masses
attached to a ring by a string passing over
a pulley.
EXPERIMENT 2: FIRST CONDITION
OF EQUILIBRIUM USING TENSION
PROTRACTORS
EXPERIMENT 1: FORCE TABLE AND
VECTOR ADDITION OF FORCES
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SCALAR- physical quantity that
can be specified by magnitude
only.
The first condition in which an
object remains at equilibrium
states that the net external force
acting on the object must be zero.
PRELIMS: PHYSICS FOR ENGR. LAB
MATRIZ, RAINIE STEFANIE | BSCE-1C | 2ND SEMESTER | 2022-2023
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Any object hangs at rest if it weight
is counteracted by other forces, so
that the vector sum of all
occurrences along the vertical and
horizontal directions is zero.
LAW OF MECHANICS
⅀Fn= 0
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For components:
⅀Fx= 0
⅀Fy= 0
EXPERIMENT 4: NEWTON’S
SECOND LAW OF MOTION ON THE
ATWOOD MACHINE
⅀Fz= 0
SECOND LAW OF MOTIONwhen there is net force acting on a
body, the body would accelerate in
the same direction as the net force.
𝑎 = 𝑭𝑛𝑒𝑡/ 𝒎
or 𝑎 = ⅀𝑭/ 𝒎
2
EXPERIMENT 3: UNIFORMLY
ACCELERATED MOTION USING
TICKER TAPE TIMER
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VELOCITY- speed with specific
direction
ACCELERATED MOTION- motion
in which the velocity change
ACCELERATION- the state of an
object in which the object
experiences a change in its state
of motion; rate of change of
velocity
AVERAGE ACCELERATION= change in
velocity/change in time
𝑎 = 𝝙𝐯⁄𝝙𝙩
UNIFORM ACCELERATED MOTIONmotion of an object where the acceleration
is constant; speed changes by a constant
amount without change in the direction.
𝑎 = 2𝑥/𝑡
𝑎 = (𝑚1 − 𝑚2/𝑚1 + 𝑚2)𝒈