18. Tied to a rope and pulled so that the rock-moves horizontally at constant velocity. Note: There must be air friction in this case.

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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Number 18
Juad. H Per:2
Fe=centriptel T= Tension
Force
N= normal
F=Frickion
w=weight/
Force of
Free-Body Diagrams
In each case, a rock is acted on by one or more forces. All drawings are in a vertical plane, and friction is negligible
except where noted. Draw accurate free-body diagrams showing all forces acting on the rock. Please use a ruler,
and do it in pencil so you can correct mistakes. The first one Is done as an example.
67.
17. Tied to a rope and pulled straight downward.
Accelerating downward at 19.6 m/s. No friction.
18. Tied to a rope and pulled so that the rock movés
horizontally at constant velocity. Note: There must be
air friction in this case.
constant v
19. Tied to a rope and pulled so that the rock
accelerates horizontally at 2g. No air friction
20. Swinging on a rope, at lowest position.
No friction.
1 T=fC
21. Tled to a post and moving in a circe at constant
speed on a frictionless horizontal surface. Coming
straight out of the paper.
22. Tied to point A by a string. Moving in a horizontal
circle at constant speed. Not resling on a solid surface.
No friction. Coming straight out of the paper.
3. Swinging on a rope. No friction.
24. Tied to point B. Moving downward in a vertical
circde with string horizontal. No friction.
IN
Transcribed Image Text:Juad. H Per:2 Fe=centriptel T= Tension Force N= normal F=Frickion w=weight/ Force of Free-Body Diagrams In each case, a rock is acted on by one or more forces. All drawings are in a vertical plane, and friction is negligible except where noted. Draw accurate free-body diagrams showing all forces acting on the rock. Please use a ruler, and do it in pencil so you can correct mistakes. The first one Is done as an example. 67. 17. Tied to a rope and pulled straight downward. Accelerating downward at 19.6 m/s. No friction. 18. Tied to a rope and pulled so that the rock movés horizontally at constant velocity. Note: There must be air friction in this case. constant v 19. Tied to a rope and pulled so that the rock accelerates horizontally at 2g. No air friction 20. Swinging on a rope, at lowest position. No friction. 1 T=fC 21. Tled to a post and moving in a circe at constant speed on a frictionless horizontal surface. Coming straight out of the paper. 22. Tied to point A by a string. Moving in a horizontal circle at constant speed. Not resling on a solid surface. No friction. Coming straight out of the paper. 3. Swinging on a rope. No friction. 24. Tied to point B. Moving downward in a vertical circde with string horizontal. No friction. IN
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