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Rotating Objects
Why do objects rotating with more speed appearing to be stationary and sometimes appearing as rotating in the opposite direction?
bhargavmech
- Aug 11th, 2009
The wagon-wheel effect (alternatively, or stagecoach-wheel effect, stroboscopic effect) is an optical illusion in which a spoked wheel appears to rotate differently from its true rotation. The wheel c...
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Black Tyres
Why tyres are ever made black?
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Editorial / Best Answer
bhargavmech- Member Since Jul-2009 | Aug 6th, 2009
When Tyres are parked for extended periods, tires dry out, discolor and eventually crack and split. The major factor degrading tires and other synthetic and rubber products is ozone, an odorless gas which is part of the air we breath. When combined with ultraviolet light (the invisible part of sunlight) a reaction occurs that attacks the tire polymer. To protect against ozone and UV damage, a stabilizer molecule called a “competitive absorber” is blended with the tire polymer. Competitive absorbers work by capturing and absorbing UV radiation and converting it to heat which is dissipated harmlessly. All tire manufacturers use the same competitive absorber, carbon black. This is why all tires are black
bhargavmech
- Aug 6th, 2009
When Tyres are parked for extended periods, tires dry out, discolor and eventually crack and split. The major factor degrading tires and other synthetic and rubber products is ozone, an odorless gas w...
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Speed and Torque
What is the practical difference Speed and Torque?
shank
- Dec 7th, 2013
The first cyclist gives his force alone but, the second cyclist gives his force with addition to the rider behind him.so, the second cyclist have the tendency to give more torque than first cyclist.
bhargavmech
- Aug 20th, 2009
speed is the distance traversed per unit time.. it is a scalar quantity. torque is the vector product of distance and force..it is a vector quantity. torque= r * F where r is distance between point of...
