Mechanics

This problem asks to solve for unknown forces when an object is in equilibrium. Let us solve it!

As platform is in equilibrium , so , by 1st condition of equilibrium,

Upward forces = Downward forces

T1+T2=600+300=900N ,

Now apply second condition,

Anti-clockwise torque= Clockwise torque

(taking point of first leg as axis of rotation so that torque due to T1 is zero)

300*2+T2*4=600*2

600-1200=-T2*4,

600=T2*4, or

T2=600/4=150N ,now

T1=90-T2=900-150=750N

Because in a conductor charges are free to move and since like charges repel each other they move as far as they can from each other, which is the surface.

Following are the essentials of indicating instruments: 1. Operating torque, 2. Controlling torque, and 3. Damping torque. OPERATING TORQUE Operating torque is produced by making use of any of these effects: magnetic, electromagnetic induction...., it is required to move the moving system of the instrument. CONTROLLING TORQUE Controlling torque opposes the operating torque and increases with the deflection of the moving system. It ensures that the deflection of the pointer is according to the magnitude of electrical quantity being measured. If this torque were not provided, the pointer would continue to move indefinitely and the deflection shall be independent of electrical quantity being measured. It also bring the pointer back to zero when the instrument is removed from the circuit. This torque is either obtained by spring or by gravity. In spring control, one or two phosphor bronze spiral hair-springs are attached to the moving spindle. The other end are attached to the frame. In this case Tc proportional to Angle of deflection. In gravity control, a small weight is attached to the moving system in such a way that it tries to bring the pointer back to the zero position when it is deflected, due to gravity. In this casse Tc proportional to sine of the angle of deflection. DAMPING TORQUE Controlling torque controls the deflection and tries to stop the pointer at its final position where its Td = Tc But due to inertia, the pointer oscillates around its final position before coming to rest. Hence damping torque is provided to avoid this oscillation and bring the pointer quickly to its final position. Thus the damping torque is never greater than the controlling torque. In fact it is the condition of critical damping which is sufficient to enable the pointer to rise quickly to its deflected position without overshooting.

a major part of an automatic transmission...

A torque converter is what couples the engine to the transmission. It acts a little bit like a clutch and allow the engine to drive the transmission. At slow engine speeds, like at idle, it slips so the engine will not stall while the transmission is in gear. As engine speed (RPM) increases it allows the engine to drive the transmission.

This is just the basic idea of what a torque converter does.

The freezing and the melting point are the same (one is from the liquid to the solid the other from the solid to the liquid phases).

For mercury Hg it is -39 °C

Tin Sn 232 °C

Zinc Zn 419 °C

Gold Au 1063 °C

Titanium Ti 1670 °C

Tungsten 3400 °C

Because the pigment that the object has on it absorbs all but the specific wavelength of "light" that the object appears as (orange things absorb all but orange), so when the light reflects back to the eye, that's the color it sees.

one

BANG!

If I understand you question correctly, no, the net force would, in fact, be zero.

Friction requires that forces be greater to move an object, but friction also makes it possible for an object to stop moving without an external applied force. Remember, friction ALWAYS opposes motion.

I see no diagram.

Are you asking what HORIZONTAL force will keep the block from sliding up ?

Where is the Diagram?????

A periodic motion is any motion that repeats itself with a fixed period. It can be anything from the motion of a comet around the sun to stamping your foot on the floor. It just has to happen repeatedly and the same motion at the same time intervals.

Simple harmonic motion is a very special motion. In the purest form, one only uses this term when the motion can be described a varying sinusoidally, i.e. like a sine or cosine function. The motion then has one frequency and one period. The oscillation of spring with a weight is a good real world approximation to this idealized idea of simple harmonic motion.

Staying with the strict terminology one will sometimes allow for harmonic overtones in a motion and use the term, "harmonic motion." In other words, like a guitar string, when plucked it has a basic frequency but may also include multiples of that frequency. Still, it has a fixed period. Usually the language is more relaxed and if something is simple harmonic motion it is sometimes merely called harmonic motion. Conversely, though it is not entirely correct, you will hear it said that a guitar string give a pure tone and exhibits simple harmonic motion when that is not strictly true.

So, there is a hierarchy of terminology.

If you say something is oscillating, or is oscillatory, you are saying something weak, that it repeats itself on a more or less regular basis. Even things like glacier formation can be said to be oscillatory.

If the process is periodic, then you can count on it repeating itself on a precise and regular basis and the time for that repetition is the period. Comets were an earlier example, but the motion of a pendulum is periodic and rotation of the wheel on a car at a constant speed is periodic. All periodic motion is also oscillatory in the sense of repeating in time. (One does not normally call circular motion oscillatory only because it is such a highly specialized form of periodic motion, but technically it is periodic.)

Harmonic motion means that the time evolution process is described well by a sinusoidal variation. If it is harmonic, then it is also periodic and oscillatory. It is not common to be so precise as to whether only one frequency of sine wave is needed for harmonic motion or perhaps several multiples of the basic frequency. If it is several, it is harmonic and period and oscillatory but it is not simple harmonic. There is a grey area as to whether one should call some motions harmonic with several frequencies or merely periodic. If it takes more than a few frequencies, then it is usually complicated enough to lose the characterization of harmonic, but it is still periodic.

Simple harmonic motion is a pure thing and hence an idealization. A pure pitch of sound may be said to be a simple harmonic motion of the air waves. A pure color of light results from a perfect sinusoidal (and hence simple harmonic) variation of electromagnetic fields. A bouncing weight attached to an ideal spring moves in simple harmonic motion. If it is not a simple sine or cosine description, then it is not simple harmonic.

If it is simple harmonic, then it is harmonic and if harmonic, periodic and if periodic, oscillatory.

Recognize that careful scientific use of these terms is different than casual use in the general language.

Ep (joules) = mass * acceleration due to gravity * height

So:

height = Ep / (mass * acceleration due to gravity)

-- First of all, you calculate the magnitude and direction of vectors. An object or

a truck are not vectors. Things like their weight, velocity, and acceleration are.

-- There are different methods and formulas for calculating each different vector.

For example:

. . . The truck's weight is (the truck's mass) x (the acceleration of gravity) downward

. . . The truck's acceleration is (the rate at which its speed changes) in the direction

in which its speed changes.

The mechanical energy of a power plant turbine, driven by steam or by water (hydro), is converted to electrical energy

Impulse refers to the change in momentum.

Impulse is the force acting over a duration of time i.e. integral of force over time.

Impulse = Force *time.

Both impulse (N-s) and change in momentum (Kg-m/s) are the same.

Kg-m/s *s/s = (Kg-m/s2) * s = N-s because 1N = 1Kg-m/s2

Not necessarily. Suppose you have three vectors (ax + by + cz), (gx + hy +iz) and (mx + ny + oz) then as long as a+g+m = b+h+n = c+i+o = 0 the resultant is zero.

If a mechanic works at a nearby workplace or within a workplace that has dangerous goods and chemicals, they should have at least a knowledge of it through getting training for WHMIS (depending if they will be required to do so, especially when fixing transport vehicles containing dangerous goods.

Smaller angles will result in a larger horizontal velocity and smaller vertical velocity. The times of flight will also be shorter since it's closer to the ground.

Larger angles have a larger vertical velocity and smaller horizontal velocity. Time of flight will be much longer since it is higher above the ground.

As for distance, 45 degrees will result in the greatest distance and for every distance before the furthest one there is an angle above 45 degrees and an angle below 45 degrees that will result in that distance.

no they can br found almost anywhere but typicly they are part of the lever

Actually it rarely does.

A mechanical compressor is a device which compresses fluid. It is used to create differences in presssure which creates movement in said fluid. The compressed fluid also has more energy, and thus more uses than expanded fluid.