a) From, the principle of moments the clockwise moment is equal to the anticlockwise moments.
weight of the block × distance from the pivot = Force × distance to the pivot
= 1000× 1 = 2.5 × F
= 2.5 F = 1000
F = 400 N
b) IMA is an ideal machine's mechanical advantage. They are calculated by dividing the distance over which you apply effort by the distance moved by the load.
In this case;
IMA = 2.5/1
= 2.5
The IMA is therefore 2.5
