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it takes 5 seconds to stop the package, determine the
magnitude of force P. 4. The sketch shows a tool used to pull out nails.
There are two parts to the tool: the vertical lever
ABD and the foot CBE, and they are joined by a
frictionless pin at B. The nail is held tightly in the
floor at F, and the tool grips and lifts the nail head
at points C and D with horizontal and vertical
components of force. All dimensions are in cm.
To simplify the problem, you may assume:
- that the vertical components of force on the nail
are equal (CY = DY), but the horizontal
components are not (CX DX);
- that the distance between points C and D is
negligible, so that both C and D lie on a vertical
line throu gh B;
- that point E is a frictionless contact....
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This document was uploaded on 03/20/2014.
- Fall '14