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There's some confusion creeping in here.
The fundamental machine is a Wedge not a Ramp.
An upward sloping Ramp can be a Wedge if it is used to provide mechanical advantage in elevating a load. Distance/Effort. (Screw thread)
A downward sloping ramp provides no such advantage, In fact it's a disadvantage. A braking force. So therefore a downward inclined plane is not a wedge and furthermore not a machine. No mechanical advantage. It's just a downward sloping plane.
Not all ramps are equal.

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Subject Views Written By Posted
Removable plugs on purpose 2683 Open mind 21-Nov-15 17:11
Re: Removable plugs on purpose 817 cladking 21-Nov-15 17:39
Re: Removable plugs on purpose 753 Open mind 21-Nov-15 18:33
Re: Removable plugs on purpose 635 cladking 21-Nov-15 18:45
Re: Removable plugs on purpose 853 Open mind 21-Nov-15 19:44
Re: Removable plugs on purpose 717 cladking 21-Nov-15 19:52
Re: Removable plugs on purpose 797 Open mind 21-Nov-15 20:28
Re: Removable plugs on purpose 664 cladking 21-Nov-15 21:04
Re: Removable plugs on purpose 743 Open mind 21-Nov-15 23:26
Re: Removable plugs on purpose 741 Dr. Troglodyte 22-Nov-15 00:53
Re: Removable plugs on purpose 826 Corpuscles 22-Nov-15 11:32
Pragmatic Semantics 875 Dr. Troglodyte 22-Nov-15 18:18
Re: Removable plugs on purpose 655 Open mind 22-Nov-15 17:30
Re: Removable plugs on purpose 680 Dr. Troglodyte 22-Nov-15 18:45
Re: Removable plugs on purpose 744 Open mind 23-Nov-15 21:22
Re: Removable plugs on purpose 654 Origyptian 23-Nov-15 21:32
Re: Removable plugs on purpose 664 Open mind 23-Nov-15 22:27
Re: Removable plugs on purpose 692 Origyptian 23-Nov-15 22:39
Re: Removable plugs on purpose 602 cladking 23-Nov-15 22:39
Re: Removable plugs on purpose 682 Origyptian 23-Nov-15 22:53
Re: Removable plugs on purpose 639 Dr. Troglodyte 24-Nov-15 16:25
Re: Removable plugs on purpose 774 Open mind 24-Nov-15 19:06
Re: Removable plugs on purpose 709 cladking 24-Nov-15 19:47
Re: Removable plugs on purpose 763 Open mind 24-Nov-15 20:30
Re: Removable plugs on purpose 543 cladking 24-Nov-15 20:57
Re: Removable plugs on purpose 686 Jon Ellison 24-Nov-15 21:31
Re: Removable plugs on purpose 590 cladking 24-Nov-15 22:33
Re: Removable plugs on purpose 703 Origyptian 24-Nov-15 20:36
Re: Removable plugs on purpose 682 Open mind 24-Nov-15 20:49
Re: Removable plugs on purpose 637 Origyptian 24-Nov-15 21:02
Re: Removable plugs on purpose 642 Open mind 24-Nov-15 21:14
Re: Removable plugs on purpose 649 Jon Ellison 24-Nov-15 20:51
Re: Removable plugs on purpose 657 cladking 22-Nov-15 20:58
Re: Removable plugs on purpose 694 Origyptian 22-Nov-15 16:58
Re: Removable plugs on purpose 693 Open mind 22-Nov-15 18:14
Re: Removable plugs on purpose 748 Open mind 22-Nov-15 20:36
Re: Removable plugs on purpose 667 cladking 22-Nov-15 21:08
Re: Removable plugs on purpose 649 Brian Patterson 24-Nov-15 18:38
Re: Removable plugs on purpose 565 cladking 24-Nov-15 19:54
Re: Removable plugs on purpose 626 Brian Patterson 24-Nov-15 20:59
Re: Removable plugs on purpose 711 Open mind 24-Nov-15 21:35
Re: Removable plugs on purpose 640 Origyptian 24-Nov-15 21:38
Re: Removable plugs on purpose 676 Open mind 24-Nov-15 21:48
Re: Removable plugs on purpose 642 Origyptian 24-Nov-15 22:22
Re: Removable plugs on purpose 602 Jon Ellison 24-Nov-15 21:43
Re: Removable plugs on purpose 612 Origyptian 24-Nov-15 21:55
Re: Removable plugs on purpose 602 Brian Patterson 24-Nov-15 22:07
Re: Removable plugs on purpose 616 cladking 24-Nov-15 22:15
Re: Removable plugs on purpose 736 Origyptian 24-Nov-15 22:15
Re: Removable plugs on purpose 644 Jon Ellison 27-Nov-15 18:29
Re: Removable plugs on purpose 695 Brian Patterson 24-Nov-15 22:22
Re: Removable plugs on purpose 673 Origyptian 24-Nov-15 22:47
Re: Removable plugs on purpose 637 cladking 25-Nov-15 00:01
Re: Removable plugs on purpose 764 Martin Stower 27-Nov-15 16:25
Re: Removable plugs on purpose 542 cladking 28-Nov-15 00:04
Re: Removable plugs on purpose 676 Martin Stower 28-Nov-15 00:43
Re: Removable plugs on purpose 605 cladking 28-Nov-15 01:13
Re: Removable plugs on purpose 698 Martin Stower 28-Nov-15 02:03
Re: Removable plugs on purpose 606 cladking 28-Nov-15 02:48
Re: Removable plugs on purpose 789 Martin Stower 28-Nov-15 13:40
Re: Removable plugs on purpose 635 cladking 28-Nov-15 15:16
Re: Removable plugs on purpose 732 Brian Patterson 28-Nov-15 15:45
Re: Removable plugs on purpose 599 Martin Stower 28-Nov-15 20:47
Re: Removable plugs on purpose 620 Merrell 28-Nov-15 21:39
According to Archae... 613 Ratcho 28-Nov-15 22:09
Re: According to Archae... 611 Merrell 28-Nov-15 22:54
Re: According to Archae... 623 Ratcho 28-Nov-15 22:58
Re: According to Archae... 644 Martin Stower 28-Nov-15 23:11
Mindset 660 Ratcho 28-Nov-15 23:36
Re: Mindset 655 Martin Stower 28-Nov-15 23:49
Re: Mindset 638 Merrell 29-Nov-15 10:17
Re: Mindset 790 Thanos5150 29-Nov-15 18:33
Re: Mindset 665 Merrell 29-Nov-15 22:49
Re: Mindset 492 cladking 29-Nov-15 23:03
Re: Mindset 663 Origyptian 30-Nov-15 04:47
Re: Mindset 588 cladking 30-Nov-15 05:07
Re: Mindset 615 Martin Stower 29-Nov-15 23:31
Re: Mindset 682 Thanos5150 29-Nov-15 23:46
Re: According to Archae... 695 Martin Stower 28-Nov-15 23:28
Re: Removable plugs on purpose 585 cladking 28-Nov-15 23:13
Re: Removable plugs on purpose 486 cladking 28-Nov-15 01:21
Re: Removable plugs on purpose 648 Brian Patterson 24-Nov-15 22:57
Re: Removable plugs on purpose 743 Origyptian 24-Nov-15 23:19
Re: Removable plugs on purpose 638 cladking 24-Nov-15 23:57
Re: Removable plugs on purpose 638 Martin Stower 25-Nov-15 00:10
Re: Removable plugs on purpose 758 Dr. Troglodyte 25-Nov-15 00:42
Re: Removable plugs on purpose 688 Jon Ellison 25-Nov-15 01:14
Re: Removable plugs on purpose 666 Open mind 25-Nov-15 04:05
Re: Removable plugs on purpose 628 Jon Ellison 25-Nov-15 07:03
Re: Removable plugs on purpose 657 Open mind 25-Nov-15 13:18
Re: Removable plugs on purpose 523 Open mind 25-Nov-15 13:37
Re: Removable plugs on purpose 710 Open mind 25-Nov-15 03:47
Re: Removable plugs on purpose 747 Origyptian 25-Nov-15 03:58
Re: Removable plugs on purpose 731 Dr. Troglodyte 25-Nov-15 16:25
Why the Plugs were covered by dirt 722 Howard West 29-Nov-15 16:48
Re: Why the Plugs were covered by dirt 684 Origyptian 30-Nov-15 04:57
Re: Why the Plugs were covered by dirt 553 Howard West 30-Nov-15 16:07
Old Posters seem to act like the Caliph Omar 667 Howard West 30-Nov-15 17:11
Re: Removable plugs on purpose 619 Brian Patterson 30-Nov-15 17:17
Re: Removable plugs on purpose 591 Howard West 30-Nov-15 18:07
Re: Removable plugs on purpose 571 cladking 30-Nov-15 21:07
Re: Removable plugs on purpose 608 Origyptian 01-Dec-15 04:56
Re: Removable plugs on purpose 696 Brian Patterson 01-Dec-15 17:10
Re: Removable plugs on purpose 638 Brian Patterson 30-Nov-15 21:54
Re: Removable plugs on purpose 615 Brian Patterson 30-Nov-15 22:14
Re: Removable plugs on purpose 676 Howard West 30-Nov-15 23:01
Re: Removable plugs on purpose 610 Brian Patterson 30-Nov-15 23:15
Re: Removable plugs on purpose 663 Howard West 01-Dec-15 02:34
Re: Removable plugs on purpose 737 Howard West 01-Dec-15 22:36
Re: Removable plugs on purpose 713 Dr. Troglodyte 02-Dec-15 00:48
Re: Removable plugs on purpose 610 Brian Patterson 02-Dec-15 00:29
Re: Removable plugs on purpose 704 Howard West 02-Dec-15 03:46
Re: Removable plugs on purpose 642 Dr. Troglodyte 02-Dec-15 21:04
some people just need lots of pictures 928 Howard West 03-Dec-15 02:12


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