Question

A force P is directed from a point A (4,1,4) meters towards a point B(-3,4,1) meters.
Determine the moment of force P about x and y axis if it produces a moment of 1000 Nm about z axis.

Answer 1

Explanation:

Step-by-step explanation:Moment of a force is equals to force times perpendicular distance.

Moment of MZ 90000Nm means the = constant force time change in distance along z.

Therefore 9000 = F (4-(-1)); 9000 = F(5)

The constant force = 1800N

We're asked to find the moment of P about x-axis: to find that, we'd need to multiply the constant force by change in distance along x axis.

Therefore moment of P about x-axis = 1800(7)= 12600Nm. Where 7 denote change in distance along x-axis.

Same method applies to moment of P about y-axis

Moment of P about y-axis = 1800(3)= 5400Nm.