The longer the lever, the greater the ____________. agility reaction time coordination power
2 answers:
Answer: Mechanical Advantage
Explanation: This is the term related to the levers.
A lever is a simple machine consisting of a bar pivoted or supported at a point (known as Fulcrum) about which it can rotate to perform the task.
Mechanical Advantage
where E→ length of effort arm from the pivot
L→ length of load arm from the pivot
→ force on the end of effort arm
→ force on the end of load arm
The effort is the applied force to work upon the load.
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Answer
given,
length of bar = 80 cm
mass of the bar = 10 kg
smaller mass = 4 kg
distance = 20 cm
taking moment about B
difference between two scale = 8 - 6
= 2 N