In a car lift used in a service station, compressed air exerts a force on a small piston of circular cross-section having a radius of 3.11 cm. This pressure is transmitted by a liquid to a second piston of radius 18.3 cm. What force must the compressed air exert in order to lift a car weighing 11200 N?

The force that must the compressed air exert in orden to lift a car weighing 11200 N is 323.47 N

Explanation:

Given:

ri = radius of first piston = 3.11 cm

ro = radius of second piston = 18.3 cm

wc = weight of the car = 11200 N

The inward pressure is:

Replacing:

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50