Solve for the following. Show all the solutions. 1. Calculate the pressure under a girl's feet if her mass is 50 kg and the area of her shoes in contact with the ground is (a) 2.00 cm (high heels), (b) 200 cm (flat soles).

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Chapter1: Units, Trigonometry. And Vectors
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FLUID MECHANICS
Solve for the following. Show all the solutions.
1. Calculate the pressure under a girl's feet if her mass is 50 kg and the area of her
shoes in contact with the ground is (a) 2.00 cm (high heels). (b) 200 cm (flat
soles).
2. A rectangular block with a base area of 25 cm2 is submerged in water of density
1000kg/m3
a. Find the
(1i) pressure p., due to the water acting on the top surface of the block
(i) Pressure p., due to the water acting on the bottom surface of the block.
b. Calculate the
(i) force exerted by the water on the top surface of the block,
(i) Force exerted by the water on the bottom surface of the block.
3. A 15 N force is exerted on the small piston area 0.025 m. The large piston has
an area of 0.50 m.
a. Calculate
(1) pressure exerted on the liquid by the small piston
(ii) pressure exerted on the large piston
(iii) force exerted by the large piston on the load
b. What is the distance moved by the small piston if the distance moved by the
large piston is 0.15 m, ignoring the effects of friction in the system?
Transcribed Image Text:FLUID MECHANICS Solve for the following. Show all the solutions. 1. Calculate the pressure under a girl's feet if her mass is 50 kg and the area of her shoes in contact with the ground is (a) 2.00 cm (high heels). (b) 200 cm (flat soles). 2. A rectangular block with a base area of 25 cm2 is submerged in water of density 1000kg/m3 a. Find the (1i) pressure p., due to the water acting on the top surface of the block (i) Pressure p., due to the water acting on the bottom surface of the block. b. Calculate the (i) force exerted by the water on the top surface of the block, (i) Force exerted by the water on the bottom surface of the block. 3. A 15 N force is exerted on the small piston area 0.025 m. The large piston has an area of 0.50 m. a. Calculate (1) pressure exerted on the liquid by the small piston (ii) pressure exerted on the large piston (iii) force exerted by the large piston on the load b. What is the distance moved by the small piston if the distance moved by the large piston is 0.15 m, ignoring the effects of friction in the system?
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