Can you help me check if my simple physics questions are correct? If they arn't can you tell me the right one? - fulcrum wheels
8. The mechanical advantage of pulleys hanging
a. the diameter of the pulley
b. the chain length
c. The number of sections of rope
d. The direction of the force input
A: D
9. A screw can be a form of
a. Leverage
b. tilt
c. Pulley
d. compound machine
A b
10. This is not a simple machine?
a. Wedge
b. Screw
c. Leverage
d. Fulcrum
A: D
11. "An athlete is working on a trophy that stands on its head?" It is the work done on the trophy Explain?
A: Yes, yes, because the use of force in the distance
12. What is the scientific definition of power?
To make A: Price, working
16. A machine used for entry and exit of arms, which was developed by a pivot pivotal point. When the input arm is pushed down by a short distance, moving the production subsidiary downward by a larger distance. It is the power of less than, equal to or greater than the input power?
A: Under
Thursday, January 7, 2010
Fulcrum Wheels Can You Help Me Check If My Simple Physics Questions Are Correct? If They Arn't Can You Tell Me The Right One?
4 comments:
Ok, I Aced Phisica are, and they just, like, for example, Introduction to Phisica. I am afraid that # 8 is correct, the answer C, the direction of the force input is always compared to the initial departure, shows the number of sections of pulleys, is often used as the mechanical advantage. In addition, # 12 May, his wrong, but that is in every Defenition couriculum differently, says Wuteve his book. Everything else is correct.
17 ff
17. 60% in the action of the machine is running, transported.
the remaining 40% is lost as energy (thermal energy in general)
18. There is a gap in the blades of scissors and a lever (handle input arm, the arm outwards Fulcrum pin blades all leaves)
19A pulley changes the direction of the force that helps so in this case, down with gravity, making it easier to raise.
20.Close but not all. is the position of the focal point for weapons
21. right and center. easier, one thread longer set, but because theForce and is spread over a longer distance. (ie it takes longer to live)
Ok! I do not know why I have helped him, but I made me happy, enjoy your work!
8c is the answer. He chose 8d.
everything looks good.
Q.8 simply false that C (the number of sections of the rope I suspect that 1 more than the number of wheels is what makes the difference!
Nice answer to question 11 BTW, very concise and precise.
Why not just search Yahoo or ask a teacher or a parent.
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