A 12000-N car is raised using a hydraulic lift, which consists of a U-tube with arms of unequal areas, filled with oil with a density of 800kg/m3 and capped at both ends with tight-fitting pistons
The wider arm of the U-tube has a radius of 18.0 cm and the narrower arm has a radius of 5.00 cm. The car rests on the piston on the wider arm of the U-tube. The pistons are initially at the same level. What is the force that must be applied to the smaller piston in order to lift the car after it has been raised 1.20 m? For purposes of this problem, neglect the weight of the pistons.
A) 0.954 kN
B) 1.88 kN
C) 1.96 kN
D) 3.67 kN
E) 1.20 kN
C
You might also like to view...
The oldest-known smelted iron dates to approximately what year?
(a) 27,000 BCE (b) 6000 BCE (c) 2500 BCE (d) 1000 BCE
Occam's Razor
A) divides the inner planets from the outer planets. B) tells scientists to use the simplest model, all other things being equal. C) is the term that describes how thin the rings of the Jovian planets are. D) describes how a planet's orbital period and distance from the Sun are related. E) is the tool that Copernicus used to shave.
A ray of light is incident on a liquid-to-glass interface at an angle of 34.1°. Indices of refraction for the liquid and glass are, respectively, 1.93 and 1.64 . What is the angle of refraction for the ray moving through the glass?
a. 23.9° b. 28.5° c. 41.3° d. 29.0° e. 40.6°
A 0.60-kg rock is swung in a circular path and in a vertical plane on a 0.25-m length string. At the top of the path, the angular speed is 12.0 rad/s. What is the tension in the string at that point?
a. 7.9 N c. 22 N b. 16 N d. 6.5 N