Archive for the ‘Physics’ Category
Science – Simple Machine – Pulleys
Posted April 23, 2017
on: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 March 27, 2017
on:Science – Heat Transfer
Posted March 27, 2017
on:Conduction and Convection :
Radiation :
Science – How Do Airplanes Fly?
Posted March 22, 2017
on:A quick revision.
Science – Resistance
Posted March 17, 2017
on: