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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
What are examples of an lever?
I think I might be able to answer your question. Im going to say 7 examples of a lever. 1)Sciccors 2)Fork3)Hoe4)Crowbar5)Toilet flusher6)
Stapler and finally number 7 a sea saw. I hope this helped. :)
Is centripetal acceleration a scalar?
acceleration is never a scalar...it describes in what direction is the motion of an object changing, so it can't be a scalar...
How do you get a car out of the mud?
There are multiple methods to get a car out of the mud. The important thing to remember is that the tires need traction in order to move out of where it is stuck. If the ground is very soft, spinning the tires will do nothing more than dig your vehicle down deeper into the mud.
*Always be aware of people around the vehicle, particularly those helping. A stuck vehicle is difficult to control because it does not have traction and helpers and bystanders can easily be injured.
Professional Wrecker Service
If your vehicle is in a dangerous location or if you carry a roadside assistance policy (such as AAA), call for a tow truck to pull your vehicle out of the mud.
Provide Traction
Kitty litter
In many situations, kitty litter will be all you need to get enough traction. Do not use clumping litter. The cheap non-clumping litter is your friend. Simply place kitty litter on the ground at, in front of, and behind the tires that turn (rear tires unless you have a front wheel drive - the tires that are spinning in the mud are the ones you want to give traction). Do not gun the engine; too much speed does not allow the tires to grip the litter. It may be necessary to rock the vehicle by shifting from drive to reverse quickly several times. If somebody is helping by pushing, rocking will be dangerous. Only try one direction so that you do not accidentally run over the person pushing.
Branches, gravel
If you do not have any kitty litter on hand, use gravel or tree branches and twigs instead. Try to shove some of these under the tire or they will simply slip out of the way when the tire spins. It may be necessary to dig some mud away from the tires before placing these items on the ground in order to give the vehicle adequate traction.
Traction products
There are products made for providing traction to stuck vehicles. My personal favorite is called Portable Tow Truck. There is another one called Tow Truck in a Box that is a bit more expensive (each box comes with materials for only one tire, whereas the Portable Tow Truck comes with traction mats for two tires), but is also effective. I highly recommend that anybody who travels through snowy or muddy locations keep one of these products and a small shovel in their car or truck. Check your local auto parts stores or hardware stores for these. Some Walmart stores carry them, as well, and you can always purchase them online from various dealers.
Hoist it Out
If you have a 4x4 or tractor or know somebody who has either, attach a tow chain to both vehicles and use that vehicle to drag the stuck vehicle out. This method is not recommended as it causes a great deal of stress on the vehicles, can cause damage, or can easily result in an accident or both vehicles being stuck.
What household object uses pulleys?
Household objects that use pulleys are blinds, garage doors, and clothes lines are just a few examples. Hope this may help!! Cheers!!
What happens when a force is exerted?
Newton's second law of motion states that force is equal to mass times acceleration, or F = ma. So, if a force is exerted on something that has mass, it will accelerate.
The answer to your question is Work.
The definition of work is: "When a force acts against resistance to produce motion in a body, the force is said to do work." - The CRC Handbook of Chemistry and Physics... Which means the exertion of a force on an object that produces motion in the direction of the force.
Can your husband place a lien against your property for work that he did?
The property would have to be the sole property of the wife and he would need to research mechanic's liens in your state to determine if he qualifies.
What is the tensile strength of plastic?
There are multitudes of plastics, and they vary widely in their mechanical properties. It is not possible to assign a tensile strength to "plastic" as there are so many.
What happens to the motion of an object if two unequal forces act on it in opposite directions?
Under these circumstances, the object will be pulled/pushed in the direction the stronger force is acting. (The stronger force overcomes the weaker one.)
(ignoring friction)
yes, it does, the rate of acceleration is tied to the incline angle, so assuming the incline angle remains the same, lengthening the incline will result in a higher terminal velocity. v^2 = (u^2) + (2*a*s)
if a mass falls the same vertical distance from rest, regardless of incline angle, its terminal velocity will be the same, converting potential energy (m*g*h), into kinetic energy (0.5m*v^2)
If gravity is moving the objects toward each other, a massive body (i.e. the earth) will be in the way. If the objects are at the same ditance from this body, a greater force is exerted on object A.
What are the five different forces?
The five different forces are the derivatives of the Quaternion Energy
E=Es + Ev=[Es,Ev]
where Es is the Scalar Energy and Ev the vector Energy.
Force = XE = [d/dr,Del][Es,Ev] = [dEs/dr -Del . Ev, dEv/dr + Del Es + DelxEv]
dEs/dr the scalar derivative of the Scalar Energy, the Scalar Centripetal Force
Del.Ev the Divergence of the Vector Energy, the Scalar Centrifugal Force
dEv/dr the scalar derivative of the Vector Energy, the Vector Tangent Force
Del Es the vector Derivative of the Scalar Energy, the Vector Gradient Force
DelxEv the Curl of the Vector Energy, the Vector Circulation Force.
A heterogeneous mixture is composed of two or more components that are not evenly distributed and are easily observable. An example of a heterogeneous mixture is beef stew.
What is a conservative force field?
A conservative force field is a field in which total energy is conserved. More formally, in a conservative field, the work done in moving between two points in the field depends only on the location of these two points and not the path taken between them. The work done in going from one point to another is equal and opposite to the work done in taking the journey in reverse.
A good way to understand the difference between conservative and non-conservative forces is to imagine a simple pendulum, on Earth (i.e. in a gravitational field) swinging back and forth. In the absence of any external forces other than gravity, the pendulum's total energy would be conserved and it would keep swinging with the same amplitude forever. All the kinetic energy it loses in rising up against gravity is gained back as it swings back down again; the work done on the return journey is equal and opposite.
However, for a real pendulum, this is not the case since it is also subject to non-conservative forces such as friction between the pendulum and its pivot. Such a force does not conserve total energy as the kinetic energy it loses due to friction when swinging one way is not gained back as it makes the return journey. Instead, it loses more kinetic energy and the friction force dissipates energy from the pendulum to its surroundings, causing the size of the swings to decrease over time.
What causes damage to wheel bearings?
Hitting a curb or something can do it, but then it's almost always one front wheel, or they were not properly greased when installed or too much torque spindle nut(s) (It's VERY low)when rotors changed which will definitely fry them.
Why are nets or foam used to catch people jumping from tall building?
It has to do with momentum.
Ft=mvf-mvi is the impulse momentum theorem where F is force, t is time, m is mass, and v is velocity. Ft is impulse or the change in momentum, which is mvf-mvi. The change in momentum will always be the same, since your mass won't change and you will start with the same velocity and end at rest. The only variable part of this is force and time, since their product is equal to the change in momentum. This is where materials such as nets, foam, blankets, ect. come into play since they increase the amount of time the force is being applied but the force that is applied is much smaller. For example, if you threw and egg at a wall it would break because the time is small so the force is large. But if you threw it at a blanket that someone held up it shouldn't break because the time is longer so the force is smaller.Same goes for your question just replace eggs with people, blankets with nets and foam, and a wall with the ground.
The glass of milk has inertia that holds it in place.
How much is 20 kN in kilogram?
1 kgf = 9.8066 N
So, 20 kN = 20 kN ∙ [1 000 N/kN] ∙ [1 kgf/9.8066N] = 2 039.4 kgf
Example of extensive property?
There are many examples of extensive properties. Some are mass, energy content, and volume.
