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Mechanics
Mechanics is the branch of physics that deals with the interactions of objects and forces in the observable world. Questions asking about projectile motion, conservation of energy, and calculus based mechanics are perfect for this topic, but questions about repairs that a mechanic would do belong in our vehicles categories.
2,416 Questions
How does changing the amplitude and frequency of a wave effect its speed?
The simple anaswer is that it depends on the cause of the vibation. If the vibration is caused by imbalance then the vibration should vary with the square of the speed (i.e speed doubles vibration increased by x4). Imbalance is not the only cause of vibration so you need to establish the cause first before you can anwer the question. There are plenty of places where you can buy a vibration chart but a good free site, which I use, is VibroNurse which has a tool for analysing vibration (as well as some very strange pictures!!!) ... the URL is www.vibronurse.com.
Who invented the first class lever?
== == There are 3 class levers, 1st, 2nd and 3rd. A 1st class lever is a lever with its Fulcrum in between the Effort and the Load. An example is the scissors and a roller coasters and glow sticks.....!!!!! (JUST REMEMBER FLE 123 1= fulcrum in the middle 2=Load in the middle 3=Effort)
A Class-I lever is a lever set up like a see-saw ... with the effort and
the load located at opposite ends, and the pivot between them.
Class-II and Class-III levers both have the pivot at one end.
Class-II . . . the effort is at the other end, and the load is in the middle.
Class-III . . . the load is at the other end, and the effort is in the middle.
A see saws is the easiest description of a 1st class lever. The fulcrum is in the middle and the force is applied on one side. Scissors and pliers are other 1st class levers.
Examples of first class levers are
-see saw
-trebuchet
-scissors
-spud bar
-chop sticks
a form of lever in which the input and output forces are on either side of the fulcrum
scissors ,beam balance , seesaw,oars
How is torque different from other forces?
Torque, also called moment or moment of force, is the tendency of a force to rotate an object about an axis,fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist.In more basic terms, torque measures how hard something is rotated
Centripetal force is a force that makes a body follow a curved, as opposed to straight, path; it is always directed orthogonal to the velocity of the body, toward the instantaneous center of curvature of the path.
What is the force of gravity and drag?
Force of gravity equals 9.8 times the mass of your object in kilograms.
Drag force equals one half times the surface area of the cross section of your object times its velocity squared times the density of air times a constant(c) that is situational
What do call someone thats studies motion force energy to explain the way things works?
physicist's study motion forces and energy to explain the way things work
Work W = [r,R][f,F] =[rf -R.F, rF + Rf +RxF]
r is distance, R is displacement and f a scalar force and F the vector force.
Concepts in Physics are Quaternions, the sum of a sclar and vector.
How does speed travel through solids?
When the force is done to one side of solid, it will translate the force to the whole entities of the solid piece and each of the small entities gain speed from result of the force pushing it.
What is the range of vernier Calipers?
Calipers are a measuring device to measure length accurately. It is basically a ruler where you can put the thing you are measuring on the ruler and slide a contact to touch the end and read the ruler.
A vernier, which works on calipers or many other measuring devices, is a way to divide up the readings into even smaller increments so you can measure even more accurately. For example, instead of finding the object is 43mm long, you can read it is 43.3mm long.
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The "Vernier" part is a subsidiary scale engraved to one increment longer than the equivalent value on the main scale for the same number of steps, providing a magnifying effect that allows reading the length to 1/1000" or 0.01mm. Often now replaced by a digital equivalent, sometimes referred to as "verniers" colloquially but quite wrongly.
any moving object is called kinetic energy and stored energy is potential energy.
Eg:energy is stored while kicking a ball and it is released when the ball is kicked.
this is potential energy to kinetic energy.
Do the object moving with uniform accelaration have constant net force on it?
According to Newton's 2nd Law,
Net Force = Mass x Acceleration
Therefore, if an object is undergoing acceleration, it follows that you definitely are looking at an object with a net force.
With a net force, the sum of the forces acting on the object is not equal to zero, and so forces acting on it are not balanced.
As for the last question, the query has not been stated clearly. Rephrase, please? (:
What is an example for a force causing an object to start moving?
The force you apply to the mouse button to make it click is.
What is the net force when the forces are balanced?
Balanced force means two forces are acting on opposite sides of body and that body doesn't change its position.
Nothing. Zero newtons. Zilch :L
What is the formula for acceleration due to gravity?
ag = GM/d2.
ag is the gravitational acceleration; G is the gravitational constant; M is the mass of the primary body (e.g. planet); d is the distance between the centres of mass of the primary and secondary bodies.
Can the coefficient of friction be negative?
yeah it can be negative but this is not the most common phenomena , friction is reduced by smoothening the surface of the body if two extremely somoothened bodies are slided over each other then you would expect that they should have been moving very smoothly but the actual thing happeining is entirely different , even though the bodies are smooth enough to avoid friction as both the are of same composition adhesive forces (force of attraction between similar molecules) dominates and thus act as frictional force resisting the motion between them
a wet torque is when you have oil or some kind of lub. on the threads
How do you find change of momentum?
Please refer to the related link below for equations dealing with change in momentum.
What is the size of the force multiplied by the distance through which the force acts?
Work W. The dot product of Force and Distance through which the force acts is called Work . W=F.d
What conditions must be met in order for work to be done?
1 there must be movement
2. there must be force
3. the force and satnce the object travels must be in the same direction
What is the difference between breakaway torque and rotational torque?
Breakaway torque is the torque required to start the initial movement, in the loosening direction, of a bolt, screw, or nut from its (non−loaded) at rest position with the locking element engaged.
Tightening torque is the torque necessary to move the bolt, screw, or nut along its threaded length in the tightening direction.
What is the force that opposes the friction force?
The opposite force to friction is momentum. Because friction stops an object from moving or slows an object down, momentum keeps it at speed.
A body is thrown vertically upward What is the magnitude of its acceleration?
A projectile fired directly upwards has no positive velocity. Its only velocity is attributed to the force of gravity, which is -9.8 meters per second squared.
