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Why does speed of rotating disc of energy meter kept as low as possible?
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How do you find speed of an object?
With a speed-o-meter!
A heavy rotating wheel that stabilizes the speed of the device to which it is attached?
a flywheel
When the rotational speed of a rotating system doubles its angular momentum?
Gets doubled
What are other three units derived from the SI base unit for length?
Square meter, cubic meter, diopter (= 1/meter). Then, of course, there are derived units that include the meter together with other units - this can be said of most SI units - such as meter/second (for speed), meter/second2 (for acceleration), newton for force (mass x acceleration), work or energy (force x distance), etc.
If a body is rotating is it necessarily bejng acted upon by an external torque?
No. Just as no force is required to keep a moving body moving in a straight lineat constant speed, no torque is required to keep a rotating body rotating at aconstant speed. External torque is present only if the body's rate of rotation ischanging.
Is it possible to paint a wheel in such a way that a design only appears while the wheel is rotating?
Not really. The only design that can appear from a painted pattern rotating at speed is concentric circles.
Is it possible for a ball to also have potential energy as it is rolling?
Yes, if it is rolling at a constant speed it has potential energy.
What is meant by Slip of an induction motor?
Slip is referred to as the difference between the speed of the rotor and the speed of the rotating magnetic field in the stator of the induction motor. Speed of the rotor=n(1-s) Speed of the rotating magnetic field= f/p
Why doesn't a fan consume less power when rotating at slow speed?
It does consume slightly less power at slower speeds, but the energy levels required to move the blade are not linear.
What is frequency of rotating mirror in speed of light?
very fast
What happens when earth start rotating at a slower speed?
then we die
Does increasing energy increase speed?
Energy may be related to speed - in this case, it's called kinetic energy. However, please note that kinetic energy also depends on an object's mass. Also, there are many other types of energy - it is quite possible to add energy to an object without changing its speed.
Why do an object must gain more speed during the time it drops from a great height than during the shorter time it takes to drop?
If it falls for a greater height, the pull of gravity has more time to speed it up. Without air resistance, gravity speeds an object up by 9.8 meter/second2, or 9.8 meter/second/second; that means that every second, the speed increases by 9.8 meter/second. Another point of view is that at a greater height an object has more potential energy; when the object falls, this is converted into kinetic energy. To have more kinetic energy, the object must fall at a greater speed.
How do you find speed of an object?
With a speed-o-meter!
How is speed tested?
by a speed gun or speedo meter?
What is Tacho generator?
Taco generator is the one which is attached to the shaft of big rotating machine to find out its speed. It converts the the rpm in to voltage i.e. the voltage generated in the small generator is directly proportional to the speed of the shaft to which it is attached meter attached to this generator is graduated in rpm instead of volts .
Is it possible to get more speed then light to the particle with accelerator?
No. The more energy the accelerator can give the particle, the closer the particle can approach to the speed of light, but it can never reach exactly that speed.
