7.3 - principle of moments

Question 1

What is a moment

Answer 1

a turning effect about a point

Question 2

define center of mass

Answer 2

the center of mass of a body = a point where all the objects ,ass is condensed and considered to act

Question 3

state the principle of moments

• give its equation

Answer 3

for an object in equilibrium,

the sum of clockwise moments = sum of anticlockwise moments

w₁d₁ = w₂d₂

Question 4

Define and givr the equation to calc moment of a force

Answer 4

Moment of a force about a point = Force x Perpendicular distance of the from the line of action of the force to the pivot

M = Fd

(Nm) = (N) x (m)