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olya-2409 [2.1K]
3 years ago
15

What does mechanical advantage describe regarding simple machines?

Physics
2 answers:
raketka [301]3 years ago
8 0

Answer:

they are manufactured

miss Akunina [59]3 years ago
8 0

Answer:

They multiply the input force.

Explanation:

Mechanical Advantage is the multiplication of the input force to give an increased output by a <em>simple machine </em>due to the difference in the length of load arm and the effort arm.

It is based upon the law of conservation of moments as to force applied at the farther point from a hinge or a pivot needs to be balanced by a greater force counteracting at a shorter distance from the pivot.

<u>Lever is a simple machine which consists of a bar pivoted or supported at a point (called fulcrum) about which it can rotate.</u>

MA=\frac{F_L}{F_E}= \frac{E}{L} ..............................................(1)

where:

F_E= force applied on the end of effort arm

F_L= force due to load on the end of load arm

L = length of load arm

E = length of effort arm

Equation (1) is known as the law of levers, it was proven by <em>Archimedes </em>using geometric reasoning.

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What are some ways that electric fields are similar to magnetic fields?
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Answer:

The correct answers are the proportionality of the fields concerning distance, vector fields, and forces at a distance.

Explanation:

The similarities between magnetic fields and electric fields are that electric fields are produced by two charges that can be positive and negative. Magnetic fields are associated with two magnetic poles, although they are also produced by moving charges. Both fields are inversely proportional to the square of the distance between the sources, both fields are vectorial and both act by distant forces.

Have a nice day!

3 0
3 years ago
A 2N and 6N force pull on an object to the right and a 4N force pulls to the left a 0.5kg object. What is the net force on the o
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Explanation:

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2 years ago
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dolphi86 [110]

Answer:

d) all of the above

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5 0
3 years ago
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