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香港考試局
香港考試局

... (e) A light spring of force constant 8 N m-1 is fixed vertically below the descending pan as shown in Figure 2.2. A light plate is attached to the upper end of the spring. The descending pan comes into contact with the plate when the two pans are at the same level. The motion of the system becomes s ...
∆x = vt And the area under the graph is the displacement
∆x = vt And the area under the graph is the displacement

topic 2
topic 2

... Objects that move in any fluid have a drag force acting on them. This drag force is a function of velocity. If the ship has an initial velocity vo and the magnitude of the opposing drag force at any instant is half the velocity, how long it would take for the ship to come to a stop if its engines st ...
Forces and The Laws of Motion
Forces and The Laws of Motion

... • When the net external force on an object is zero, its acceleration is zero • Conversely, an object that is not accelerating has no net force acting on it • Net force is vector sum of all forces: • Bodies at rest will stay at rest and bodies in motion will stay in straight-line motion at a constant ...
chapter 2 - UniMAP Portal
chapter 2 - UniMAP Portal

... Objects that move in any fluid have a drag force acting on them. This drag force is a function of velocity. If the ship has an initial velocity vo and the magnitude of the opposing drag force at any instant is half the velocity, how long it would take for the ship to come to a stop if its engines st ...
solution
solution

Forces-momentum
Forces-momentum

... Combining forces • Often, more than a single force acts on an object at one time. • A combination of forces on an object is called the net force. • When forces that act in the same direction, the net force can be found by adding the strengths of the individual forces. • When forces act in opposite ...
SIMPLE HARMONIC MOTION EXERCISE –I POLARISER
SIMPLE HARMONIC MOTION EXERCISE –I POLARISER

1) Which of Newton`s laws best explains why motorists should
1) Which of Newton`s laws best explains why motorists should

Forces
Forces

... The force that two surfaces exert on each other when they rub against each other. ◦ Acts in the direction opposite to the objects motion. Friction opposes motion. ◦ Eventually friction will cause an object to come to a stop. ◦ Without friction the object would continue to move at a constant speed un ...
motion - SCHOOLinSITES
motion - SCHOOLinSITES

... Observing Motion Motion: object’s change in position relative to a reference point. ...
Circular Motion Review
Circular Motion Review

... d. The orbital velocity of a satellite does not depend upon the mass of the planet around which it orbits. e. A high-altitude satellite will require a greater orbital speed than a low-altitude satellite. f. ...
Unit 4 Review - Clayton School District
Unit 4 Review - Clayton School District

Document
Document

P2.3 Forces
P2.3 Forces

Lecture #1
Lecture #1

... dictates how system level performance requirements are translated into interface requirements for the subsystem components. For complex systems, during the initial stages of the design process, it is difficult for the designer to envision the demands that are going to placed upon the various subsyst ...
L6b--10-18-
L6b--10-18-

... good. You want to add just the right amount of friction/dissipation to get critical damping. This may seem a little surprising. Can you argue why too much damping isn’t good in this case? ...
B. Sc. Physics Syllabus (Semester Wise)
B. Sc. Physics Syllabus (Semester Wise)

PPT
PPT

... • For SHM, the restoring force is proportional to the displacement (Hooke’s Law). • The period is the time required for one cycle, and the frequency is the number of cycles per second. • Period for a mass on a spring: • SHM is sinusoidal. • During SHM, the total energy is continually changing from k ...
Ch.4 Forces
Ch.4 Forces

Name______________________________________
Name______________________________________

Word
Word

Questions - TTU Physics
Questions - TTU Physics

III - 1 III. Applications of Force and Motion Concepts Concept Review
III - 1 III. Applications of Force and Motion Concepts Concept Review

1. A skydiver of mass 80 kg falls vertically with a constant
1. A skydiver of mass 80 kg falls vertically with a constant

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Seismometer

Seismometers are instruments that measure motion of the ground, including those of seismic waves generated by earthquakes, volcanic eruptions, and other seismic sources. Records of seismic waves allow seismologists to map the interior of the Earth, and locate and measure the size of these different sources.The word derives from the Greek σεισμός, seismós, a shaking or quake, from the verb σείω, seíō, to shake; and μέτρον, métron, measure and was coined by David Milne-Home in 1841, to describe an instrument designed by Scottish physicist James David Forbes.Seismograph is another Greek term from seismós and γράφω, gráphō, to draw. It is often used to mean seismometer, though it is more applicable to the older instruments in which the measuring and recording of ground motion were combined than to modern systems, in which these functions are separated.Both types provide a continuous record of ground motion; this distinguishes them from seismoscopes, which merely indicate that motion has occurred, perhaps with some simple measure of how large it was.The concerning technical discipline is called seismometry, a branch of seismology.
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