Lnewqban's latest activity
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Here are some more solutions; In each case, the triangle constructed in green is similar to the triangle highlighted in brown which... -
BBC News once posted a challenging geometry problem from a Chinese maths exam taken aged 16, comparing it to the British exams taken at...
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Lnewqban reacted to anuttarasammyak's post in the thread Another nice problem from Savchenko with
Like.
The drop of the slab releases potential energy which enhances kinetic energy. The perpendicular component of the slab displacement... -
A slab rests on two massless rollers of different radii such that the angle of the slab's inclination is ##\alpha##. There is no...
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Lnewqban reacted to wrobel's post in the thread A cool collection of classical mechanics problems with Like.
mech problems I like 3D problems more, but these are also great
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Three identical circles intersect in such a way that each intersects the centers of the other two as in the figure. The problem is to...
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Lnewqban reacted to renormalize's post in the thread Rubber tyre “melting” inside, turned to deadly goo. Why? with Like.
Is it possible your old tires featured ContiSeal? ContiSeal is a technology developed by Continental designed to seal a damaged tire...
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Lnewqban reacted to adebo's post in the thread Why must residential electrical systems be connected to Earth (soil)? with Like.
Beautiful explanation!
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Lnewqban reacted to Steve4Physics's post in the thread Find the acceleration of a block (some sort of double Atwood machine?) with Like.
@michelp, this is a bit late in the day, but it might explain the misunderstanding... In the case of a simple Atwood machine (with...
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Lnewqban reacted to .Scott's post in the thread Achievable accuracy of thermostatic radiator valves with Like.
For contrast, in the simplest kind of room thermometer: There is a small resistor in the thermostat that mimics the heating of the room...
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Lnewqban reacted to kuruman's post in the thread Find the acceleration of a block (some sort of double Atwood machine?) with Like.
Did you notice that your expression cannot possibly be correct because its numerator is the negative of the denominator and simplifies...
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Lnewqban reacted to magicfrog's post in the thread Engineering Kinematic study of connected rods with Like.
I will try to repost my solution with a higher resolution. Yes, the triangle AH, HB and BA is a rigid triangle. You can imagine it as...
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Lnewqban replied to the thread Engineering Kinematic study of connected rods.The resolution of the attached photo is too low to make it readable. Note that links AB-BH-HA form a solid triangle piece. Do you have...
