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The moment of a force about any point is defined as the force x perpendicular distance from the line of action of the force to the point - moment = F x d the unit is Nm.
Principle of moments states t...

Scalars have a magnitude (size) only. Vectors have both magnitude and direction.

Let's use an example.

x+y=6

2x+3y=14

Find the values of x and y.

When I was kid back then, I was always wondering why are equations important? We...

The Pythagoras Theorem equation is:

a² + b² = c²

^{It is used to calculate an unknown side of a right angled triangle. a, b and c represe...}

To simplify an equation the x terms can be collected together to give: 4x + 5x - 2x = 7x

The numbers can be collected together to give: -2 + 7 = 5

Which then when put togeth...