本题目来源于试卷: Physics Unit10: Fluids Related Topics，类别为 通用国际物理
[单选题]
In a hydraulic garage lift, the smallsw n6/ uln;w qmj.,iq0 piston g91i(g5n5spph, h4qx pj6 kis has a radius of 5.0 cm and the large ppn1 i94pjp(5s,h5shi 6 kxqggiston has a radius of 15 cm. What force must be applied on the small piston in order to lift a car weighing 20,000 N on the large piston?
A. $6.7 \times 10^{3} \; N$
B. $5.0 \times 10^{3} \; N$
C. $2.9 \times 10^{3} \; N$
D. $2.2 \times 10^{3} \; N$
参考答案: D
本题详细解析:
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