Answer:
Explanation:
Given
Required
Determine the difference in the blood pressure from feet to top
This is calculated using Pascal's second law.
The second law is represented as:
Subtract P1 from both sides
Where
P2 - P1 = Blood Pressure Difference
So, the expression becomes:
Hence, the difference in blood pressure is approximately
The correct answer to the question is: 4) 74.9 N/m.
EXPLANATION:
As per the question, the stretched length of the spring is given as x = 0.250 m.
The potential energy gained by the spring is given as 2.34 joules.
We are asked to calculate the spring constant of the spring.
The potential energy gained by the spring is nothing else than the elastic potential energy .
The elastic potential energy of the spring is calculated as -
Potential energy P.E =
⇒k =
=
= 74.88 N/m
= 74.9 N/m. [ans]
Hence, the force constant of the spring is 74.9 N/m.