Unit 4 Practice Quiz - L 10 Physics Honors Chapters 8 l2...

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Unformatted text preview: L.) 10. Physics Honors Chapters 8, l2 Quiz Where should a force be applied on a lever arm to produce the most torque? A. closest to the axis of B. in the middle ofthe C. farthest from the D. It doesn’t matter. E. Not covered in the rotation lever arm axis of rotation assigned reading. The doorknob ofDoorA is located at its center. The doorknob ofDoor B is placed at its edge. The same torque acts on both doors. The magnitude ofthe force acting on Door A is _ mmm the magnitude ofthe force acting on Door B. A. onewfourth B. one-half C. two times D. four times E. Not covered in the assigned reading. The diagrams below show forces applied to a wheel that has weight W: 20 N. in which diagram(s) is the wheel in dynamic equilibrium? 23a ass 10;»: 101»: ion inn ma lDN MEN 1!] ill W W W at ' (A) (B) (C) (D) A. A B. B C. C D. D E. AandC A person weighing 800 N stands with one foot on each oftwo bathroom scales. Which statement is definitely true? A. None ofthese is B. Each scale will C. Ifone scale reads D. Each scale will E. Not covered in the definitely true. read 400 N. 500 N, the other will read 800 N. assigned reading. read 306 N. . Three forces act on an object. If the object is in translational equilibrium, which of the following must be true? i. The vector sum ofthe three forces must equal zero. H. The magnitudes ofthe three forces must be equal. HI. All the forces must be parallel. A. It and HE only 13. Ill only C. lonly D. land It only 13. 1, II, and III The mass ofa mass-and—spring system is displaced 10 cm fromits equilibrium position and released. A frequency of4Hzis observed. What frequency would be observed ifthe mass had been displaced only 5 cm and then released? A. lllz B. 8H2 C. 2H2 D. 4Hz E. Noneofthese. Ifyou take a given pendulumto the moon, where the acceleration ofgravity is less than on earth, the frequency ofthe pendulum A. will increase. B. will decrease. C. may increase or decrease. D. will not change. When the mass ofa simple pendulum is tripled, the time required for one complete oscillation A. decreases by a B. increases by a factor C. increases by a D. decreases by a B. does not change. factor of 3. of9. factor of3. factor of9. Simple pendulum A swings back and forth at twice the frequency ofsimple pendulum B. Which statement is correct? A. Bis twice as long as B. A is twice as C. Bis four times the D. B is four times the E. Bis twice as A. massive as B. length ofA. mass ofA. massive as A. A mass oscillates on the end ofa spring that is located on the earth. An identical mass oscillates on the end ofan identical spring that is located on the moon. Where is the period of oscillation the greatest? A. On the moon B. It is the same on both the C. On the earth D. The answer cannot be earth and the moon. determined. Page 1 ...
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