ES 65 1st Long Quiz 1

ES 65 1st Takehome Quiz

ES 65 1st Takehome Quiz

1. The system in the figure below is at 20 °C. Compute

1. The system in the figure below is at 20 °C. Compute

the pressure at point A in lbf/ft2 absolute.

the pressure at point A in lbf/ft2 absolute.

2. Gate AB in the figure is a homogeneous mass of 180 kg, 1.2 m wide into the paper, hinged at A, and resting on a smooth bottom at B. All fluids are at 20 °C. For what water depth h will the force at point B be zero?

2. Gate AB in the figure is a homogeneous mass of 180 kg, 1.2 m wide into the paper, hinged at A, and resting on a smooth bottom at B. All fluids are at 20 °C. For what water depth h will the force at point B be zero?

3. Two spheres, each 1.2 m in diameter, weigh 4 kN and

3. Two spheres, each 1.2 m in diameter, weigh 4 kN and

12 kN, respectively. They are connected with a short

12 kN, respectively. They are connected with a short

rope and placed in water. What is the tension in the

rope and placed in water. What is the tension in the

rope and what portion of the lighter sphere protrudes

rope and what portion of the lighter sphere protrudes

from the water?

from the water? FS

T

w1 = 4 kN

w2 = 12 kN

FS

T

w1 = 4 kN

w2 = 12 kN