0
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
Levers are force multipliers so the effort, the imput force, can produce a larger force on the load. Levers use moments to work. M=Fxd
Here's an example:
You use a force of 5N to lift a load. The lever causes your hand to be 1m away from the pivot of the lever. The moment is 5Nm.
The load is 0.2m from the pivot. Rearrange the equation and you should find:
F=M/d --> F=5/0.2=25N
Hope this helped!
Does inductor allow ac to pass through it?
Yes, with some difficulty. You can think of an inductor as a kind of "AC resistor"
in a way. The higher the frequency of the AC, the more difficulty it has passing
through the inductor.
If you apply AC voltage across an inductor, where
V = voltage of the AC
f = frequency of the AC
L = inductance of the inductor,
then the AC current through the inductor is
I = V/2 pi f L
When the net force of an object is not 0 the forces on the object are what?
The forces are not in equilibrium and there is a resultant(net, unbalanced) force on the object.
Does water have a low surface tension?
Water has a relatively high surface tension compared to other liquids, due to hydrogen bonding.
What condition must exist between two points in a conductor in order to maintain a flow of charge?
Potential Difference
I wouldn't call such a weight "fat", at least in most cases (unless the lady were extremely short).If the lady pushes downward, and doesn't accelerate downward, it means the couch is pushing back upwards, also with 600 N.
It depends on the masses of the blocks and the coefficients of friction. If the force of friction between the lower block and the ramp is greater than the force of friction between the upper and lower blocks, the upper one will accelerate at a greater rate than the lower one, and it will fall off. Otherwise, they will accelerate together.
Yes, bats can sense obstacles. Bats use echolocation to hear and see at night. When the vibrations bounce back, a bat can sense if there are things in the way.
Turn the percentage into a decimal by dividing by 100: 91% --> .91
Work out = (efficiency) * (work in)
dividing by a unit of time gives =>
Power out = (efficiency) * (power in)
P_o = .91 * 4000 Watts = 3640 Watts
The line of action of weight is outside the base of the body.
What is the kinetic energy of a ball when it is dropped from a height and it falls on a table?
it is the difference of the potential energy when the body is on the table and from the position where it is dropped.
An object is dropped on the earth After 1.5 s what is its speed in meters per second?
The object will be moving at 14.7 meters per second. 1.5 seconds X 9.8 meters per second squared(the gravitational constant). This assumes that the object's original velocity is zero.
That is called the Spring Constant. It describes the amount of deformation of the spring, either stretch or compression, in units of distance deformed for each unit of force applied.
Continuously Variable Transmissions (CVTs) multiply torque through a system of pulleys and a belt or chain that can change diameters seamlessly. By adjusting the effective diameter of the pulleys, the CVT optimizes the engine's RPM to maintain the best torque output for varying driving conditions. This allows for smoother acceleration and better fuel efficiency compared to traditional gear-based transmissions, as it can continuously adapt to the most efficient engine speed without the need for fixed gear ratios.
velocity is 1st derivative of distance with respect to time
acceleration is 2nd derivative of distance with respect to time
dx/dt = velocity = 3t^2
dv/dt = acceleration = 6t
Rotational inertia is sometimes called spin. It involves the movement of a mass around an axis. This moving mass will have some measure of kinetic energy that is due to the fact that it is spinning. The variables are the shape and the mass of the object, the way the mass is distributed within the object, the speed of its rotation, and the location of the axis of spin through the object.
The moment of inertia might also be called angular mass, mass moment of inertia, rotational inertia, or polar moment of inertia of mass. Use the link below for more information.
