Afulcrum moving a resistance of 200 g has a distance to the fulcrum of 20 cm, the effort mass of 50 g has a distance to the fulcrum of 80 cm. the resistance moves 10 cm, the effort moves 40 cm. calculate the ama.
0.25
1
4
not enough information given

AMA value is 4.

Explanation:

AMA is known as Actual mechanical advantage

It can be calculated by the following formula

 MA = FB / FA

 MA = mechanical advantage,

 FB = force of the object

 FA = effort to overcome the force of the object.

Given: FB=200

 FA=50

 MA=200/50

 MA=4

Actual mechanical advantage takes into account energy loss due to deflection, friction, and wear.

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.