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Define the moment of a couple

The moment of a couple is the force times the perpendicular distance between the lines of action of the force.

Answered by Heather W. • Physics tutor

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An object with weight w is suspended from two strings at angles θ1 and θ2 to the vertical and with tensions T1 and T2. How would you resolve the vertical and horizontal forces?

Horizontal: T1 sin θ1 = T2 sin θ2Vertical: T1 cos θ1 + T2 cos θ2 = w

Answered by Heather W. • Physics tutor

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Find the stationary points of y = x^3 -3x^2 - 9x +5

A stationary point is a point where dy/dx = 0.First we need to find dy/dx. This is done by differentiating y term by term to get dy/dx = 3x^2 - 6x - 9.Setting this equal to zero, we need to solve 3x^2 - 6...

Answered by Adam S. • Maths tutor

5883 Views

Make x the subject 2x+3=3x-1

rearrange by taking away 2 and adding 1

Answered by Katherine A. • Maths tutor

2795 Views

Find the values of x: x^2 + 14x + 22 = 4x -2

x² + 14x + 22 = 4x -2
1) First you should arrange the equation into the format ax² + bc + c = 0. This gives x² + 10x + 24 =02) Factorise into (x+n)(x+m) = 0. To work...

Answered by Gemma M. • Maths tutor

2957 Views