ANSWER: the mechanical advantage is 3.75.
Step-by-step explanation:
Given,
Load = 300
Effort = 80
Load distance = 4 cm
Effort distance = 30 cm
To calculate Load distance and Effort distance, we can use the formula:
Load x Load distance = Effort x Effort distance
300 x 4 = 80 x 30
1200 = 2400
Load distance = 4cm
Effort distance = 30cm
Now, we can calculate the mechanical advantage using the formula:
MA = Load / Effort
MA = 300 / 80
MA = 3.75