Question

Calculate effort applied to balance the load.

• A. 100
• B. 200
• C. 300
• D. 400

Answer 1

The correct option is B 200

Length (l) = 1.75m
Load (L)= 500N
Load arm (LA) = 0.5

Effort arm (EA) = 1.75-0.5 = 1.25

$E\times EA=L\times LA$

$\Rightarrow E\times 1.25=500\times 0.5$

$\Rightarrow E=\frac{250}{1.25}=200$