Definition
The point at which the entire weight of the body
may be considered as concentrated.
A single vertical upward force equal to the weight
and applied at the center of gravity will keep the
body in equilibrium.
If the acceleration due to gravity (g
Table 1. Determination of Moment of Inertia of Disk and Ring (rotated about the center)
I TOTAL
Actual value of moment of inertia of disk and ring,
I TOTAL =I DISK + I RING
R1
( 2+ R22 )
1
1
I TOTAL = M
R 2+ M
2 DISK
2 RING
1
1
I TOTAL = (1474.3 g ) ( 11.
Table 1A. Determining the Force Constant of the Spring
Trial 1
Mass
(m)=0.015 kg
Force
( F ) =mg
( 0.015 ) (9.8)
0.147 N
Displacement
Force constant
( x )=0.022 m
(k )=
F
x
0.147
0.022
6.68
N
m
k ave =
Average force constant
k 1 + k 2+ k 3 +k 4
4
6.68+
HOMEWORK / ASSIGNMENT # 1
NAME
COURSE CODE/SECTION
Fourth Term SY 2016 - 2017
SEAT
NO.
PHY
13 /
Figure F
NP
S
NP
A
DATE
MAGNETISM AND ELECTROMAGNETISM
1.
The force between two magnets is 0.004N when they are 50 cm apart. The pole strength of one magnet is
Dynamics of Rotation to
Static Equilibrium
Jacque Lynn F Gabayno, Ph.D.
Lecture Notes
1
Previously
Physical quantities related to translational
motion: displacement, velocity, and acceleration
Kinematic equations in 1D and 2D
Today
Define quantities in ro
Equilibrium and Torque
Equilibrium
An object is in Equilibrium when:
1. There is no net force acting on the object
2. There is no net Torque (well get to this later)
In other words, the object is NOT experiencing
linear acceleration or rotational accelera
4th Quarter AY 2015 - 2016
Physics 11 Problem Set 2: Rotation of Rigid Bodies
Name:
Lecturer: Jacque Lynn F. Gabayno
Date:
Section:
Score:
Solve each problem clearly and completely for full credit. Encircle the letter of the correct answer.
1. Circular mo
MOMENT
(TORQUE)
MOMENT/ TORQUE ()
-The ability of a force to rotate a body or system
about an axis.
-Mathematically, it is the product of the force and
its lever arm or moment arm.
= F d
Where:
F = force or applied force
d = moment arm or lever
arm
= mo
Hydrodynamics
Two types of flow
1.Streamline
flowanorderlyflowofmolecules.Theyseem
toflowadefinitepathassumingthereisnofriction .
2.Turbulent flow adisorderlyflowofmolecules.Theytend
tocollidewithoneanother.
The Continuity Principle
In any streamline flow
Solve the following problems:
1. Mercury is poured into a U-tube (see figure below - left). The left arm of the tube has cross-sectional area A1 of 10.0 cm2, and
the right arm has a cross-sectional area A2 of 5.00 cm2. One hundred grams of water are then
Elasticity
Definition
property by virtue of which a body returns to its original size
and shape when the forces that deformed it are removed.
Elastic Behavior
A lightly-deformed material will recover its original
shape
after the stress is removed. Elastic
Question 1
Which of the following is a definition of power?
Selected
Answer:
Power is the rate of change of
energy.
Question 2
A spring with spring constant k = 800 N/m is extended 12 cm from its equilibrium
position. A spring with 6.0 cm extension from e