Question

Refer to the following photo to answer this Question.

Answer 1

Here as we can see that weight on the right side of ruler given as D is applying torque about the fulcrum this is counter balanced by weight on left side given as A

now by torque balance we can say

$W_aL_a = W_bL_b$

now we will have

$W_a = W_b\times \frac{L_b}{L_a}$

now here as per given setup we can see that

$L_b > L_a$

so here we will have

$W_a > W_b$

so the weight required to hold D will be more and correct answer will be

The setup increases the amount of force required to lift the block and, therefore, decreases your mechanical advantage.