Question

Classwork_ Archimedes’ Principle & Pascal’s Law 1. a) State Archimedes’ principle. (2 pts.) b) An oil drum is floating vertically on water as shown below: gravitational field strength, g = 10 Nkg?¹, density of water = 1000 kgm?³, atmospheric pressure = 1 × 10? Pa i) Calculate the volume of water displaced. (3 pts.) ii) Calculate the mass of the water displaced. (3 pts.) iii) Calculate the upthrust acting on the oil drum. (3 pts.) iv) State the weight of the oil drum. (1 pt.) v) Calculate the pressure at a depth of 0.75 m below the surface of the water. (4 pts.) 2. The diagram below shows a simple breaking system in a vehicle: When a driver pushes the brake pedal, a force F? is exerted over an area A? in the master cylinder A. The cross sectional area of cylinder B is A?. A force F? is then applied to the breaking mechanism in the wheels of the vehicle. F? = 150 N, A? = 2.0 cm², A? = 3.0 cm² a) Calculate the pressure exerted in cylinder A in pascals. (3 pts.) b) State the pressure exerted in cylinder B. (1 pt.)

          Classwork_ Archimedes’ Principle & Pascal’s Law
1. a) State Archimedes’ principle. (2 pts.)
b) An oil drum is floating vertically on water as shown below:
gravitational field strength, g = 10 Nkg?¹, density of water = 1000 kgm?³,
atmospheric pressure = 1 × 10? Pa
i) Calculate the volume of water displaced. (3 pts.)
ii) Calculate the mass of the water displaced. (3 pts.)
iii) Calculate the upthrust acting on the oil drum. (3 pts.)
iv) State the weight of the oil drum. (1 pt.)
v) Calculate the pressure at a depth of 0.75 m below the surface of the water. (4 pts.)
2. The diagram below shows a simple breaking system in a vehicle:
When a driver pushes the brake pedal, a force F? is exerted over an area A? in the master cylinder A. The cross sectional area of cylinder B is A?. A force F? is then applied to the breaking mechanism in the wheels of the vehicle.
F? = 150 N, A? = 2.0 cm², A? = 3.0 cm²
a) Calculate the pressure exerted in cylinder A in pascals. (3 pts.)
b) State the pressure exerted in cylinder B. (1 pt.)

Classwork Archimedes’ Principle Pascal’s Law
1. a) State Archimedes’ principle. (2 pts.)
b) An oil drum is floating vertically on water as shown below:
gravitational field strength, g = 10 Nkg?¹, density of water = 1000 kgm?³,
atmospheric pressure = 1 × 10? Pa
i) Calculate the volume of water displaced. (3 pts.)
ii) Calculate the mass of the water displaced. (3 pts.)
iii) Calculate the upthrust acting on the oil drum. (3 pts.)
iv) State the weight of the oil drum. (1 pt.)
v) Calculate the pressure at a depth of 0.75 m below the surface of the water. (4 pts.)
2. The diagram below shows a simple breaking system in a vehicle:
When a driver pushes the brake pedal, a force F? is exerted over an area A? in the master cylinder A. The cross sectional area of cylinder B is A?. A force F? is then applied to the breaking mechanism in the wheels of the vehicle.
F? = 150 N, A? = 2.0 cm², A? = 3.0 cm²
a) Calculate the pressure exerted in cylinder A in pascals. (3 pts.)
b) State the pressure exerted in cylinder B. (1 pt.)

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