Wheel Rope Pulley
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| 2 TON 4 WHEEL ROPE BLOCK AND TACKLE PULLEY HOIST TOOL | |
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$16.99 Time Remaining: 2d 20h 42m |
| MANUAL 4 WHEEL ROPE BLOCK AND TACKLE PULLEY HOIST TOOL LIFT PULLY RIGGING TOOL | |
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$29.99 Time Remaining: 1h 54m Buy It Now for only: $29.99 |
Wheel Rope Pulley
Help me with science?! (im sure its easy for you.)?
8. what is the mechincal advantage of an inclined plane that has a length of 20 meters and a height of 5 meters?
a. 4
b. 25
c. 100
d. none of these
12. Why is efficiency a better measure of a machine's value than its mechincal advantage?
a. efficiency is measured in joules
b. is it easier to calculate than mechnical advantage
c. it is more accurate because other outside forces are considered
d. it is expressed as percent
15. What will increase the efficiency of a pulley?
a. a larger wheel
b. more grooves in the wheels
c. more ropes supportng the weight
d. efficency cannot be changed.
I cant seem to find the answer to my science book.
B) 25
D) it is expressed as percent
A) a larger wheel
Simple Machines - the axle and wheel