markmlg122
11.11.2019 •
Physics
If you apply a force of 50 n, a pulley system can lift a box with a mass of 20 kg. what is the mechanical advantage of the pulley system?
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Ответ:
The mechanical advantage of the given pulley system is 3.92.
Explanation:
Mechanical advantage is also known as ratio of output force to input force
Given that Input force = 50N and mass of the box = 20kg
Acceleration due to gravity =
Mass of box =20 kg output Force= 20 × 9.8 = 196N
Mechanical Advantage =
= 
= 3.92. Thus the mechanical advantage of the pulley system is 3.92.
Ответ:
The answer choice is B