Archive for the ‘Physics’ Category
Science – Simple Machine – Pulleys
Posted on: April 23, 2017
This video explains “mechanical advantage” in pulley system clearly.
The greater the “mechanical advantage” in a pulley system, the heavier the loads you can lift.
Also, in another type of pulley system consists of two pulley wheels each on a shaft, connected by a belt. This transmits rotary motion and force from the input, or driver shaft, to the output, or driven shaft.
If the pulley wheels are different sizes, the smaller one will spin faster than the larger one.
Let’s try this question:
Refer : http://www.bbc.co.uk/schools/gcsebitesize/design/systemscontrol/mechanismsrev7.shtml to learn more about velocity ratio, output speed and torque (turning force).
Science – Is Radiation Dangerous?
Posted on: March 27, 2017
Science – Heat Transfer
Posted on: March 27, 2017
Conduction and Convection :
Radiation :
Science – How Do Airplanes Fly?
Posted on: March 22, 2017
A quick revision.
Science – Resistance
Posted on: March 17, 2017
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