Ahydraulic device is used to lift a block of 15 kg mass by 5 cm. (a) if the ratio of areas is a/a = 10, what force is required to do the lifting assuming the weight of the fluid is neglected?

To solve this problem it is necessary to use the concepts related to pressure. The pressure can be defined as

Due to the continuity and pressure conservation relationship, the pressure must be preserved to support the weight (gravity) and to lift it (lift)

In this way,

That is equal to

We have a ratio of A/a = 10, then

Therefore the force required to do the lifting is 147.15N

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

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