Showing posts with label PHYSICS. Show all posts
Showing posts with label PHYSICS. Show all posts
Tuesday, 24 August 2021
Wednesday, 11 August 2021
Monday, 9 August 2021
SIMPOP Solar System - Tata Surya
What is a Solar System?
A solar system comprises of a star and all the celestial bodies that travel around it - planets, moons, asteroids, comets. Some solar systems may even have two stars.What is a Star?
A star is an immense glowing ball of extremely hot gases, mainly hydrogen and helium, where nuclear fusion releases a tremendous amount of energy. A few nearby stars are Sun, Proxima Centauri, Sirius, Polaris.What is a Planet?
A planet is a large rocky or gaseous body that is spherical in shape and orbits a star. In our solar system, mercury, venus, earth, mars, jupiter, saturn, uranus and neptune are planets. With advanced telescopes, scientists are detecting planets around most stars.What is a Comet?
A comet is a ball of frozen gases, rock and dust that is about the size of a small town. It goes around the sun in a highly elliptical orbit. Jets of gas and dust from its surface form a long tail behind it. | Build Your Solar System Grades 6th - 12th |
Tuesday, 19 January 2021
Saturday, 7 November 2020
0625 IGCSE Physics - Electromagnetic Induction
IGCSE Physics
Electromagnetic Induction
Motor Generator Exam Style Questions
IGCSE Examination
Tuesday, 9 April 2019
IPA SMP FISIKA - USAHA DAN ENERGI
Ringkasan Materi IPA Fisika SMP
Usaha dan Energi
file dalam bentuk pdf, bisa didownload.
file dalam bentuk pdf, bisa didownload.
Thursday, 4 April 2019
KUMPULAN SOAL UN/US IPA-FISIKA SMP
SOAL-SOAL FISIKA SMP
Kumpulan soal UN/US IPA-Fisika SMP 260 soal untuk melatih kemampuan sebelum menghadapi Ujian Nasional/Ujian Sekolah di tingkap SMP
Monday, 27 November 2017
Saturday, 29 November 2014
TURNING ON A PIVOT worksheet (ANSWER)
1. Calculate the moment of this force. Show your working.
Moment = F x D
= 100N
x 0.3m
= 30Nm
2. This system is balanced
Clockwise moment =
(20N x 3m) + (25N x (3m + 1m))
=
60 Nm + 100 Nm
=
160 Nm
b)
State the size of the anticlockwise moment
Anti-clockwise moment =
X N
x 2m
=
2X m
c)
Calculate the size of force X
Clockwise moment =
Anti-clockwise moment
160 Nm
= 2X
m
160
: 2 = X
80 = X
3. A
pivoted uniform bar is in equilibrium under the action of the forces shown.
Anti -Clockwise moment
= Clockwise moment
10N x 4m = (F x
2m) + (6N x (2m+2m))
40
Nm =
2F m + 24 Nm
40 Nm – 24 Nm = 2F m
16 Nm = 2F m
16 Nm : 2 m = F
8
N = F
4. A uniform beam AB of mass
20kg and length 3m rests in equilibrium in a horizontal position. The beam is
supported by a single pivot at C and a particle of mass 6kg is attached at B.
Assume: AC is X meter, so CB is (3 – X) meter
Anti -Clockwise moment
= Clockwise moment
20 kg
x X = 6 kg
x (3 – X)
20X = 18 – 6X
20X + 6X = 18
26X =
18
X = 18 : 26
X = 0.69 meter
5. a
uniform metre rule, freely pivoted at a point 20 cm from end P.
The rule is kept horizontal by means of a 120g mass
suspended 5.0 cm from end P. Use the
principle of moments to help you determine the mass of the metre rule.
Anti -Clockwise moment
= Clockwise moment
120
x 15 = MASS x 30
1800 = MASS x 30
1800 : 30 = MASS
60 gram = MASS
6. Look at this example of a balanced system
 |
a) Calculate the size of the clockwise moment
ANSWER:
Clockwise Moment =
F x D
=
10N x
4.5m
= 45Nm
b)
State the size of the anticlockwise moment
ANSWER:
Anti-clockwise Moment =
F x D
=
15N x
Xm
= 15XNm
c)
Calculate the distance x.
Clockwise moment =
Anti-clockwise moment
10N x 4.5m
= 15N
x Xm
45 Nm = 15X Nm
X
= 45 : 15
X = 3 m
