Would the free body diagram for a "sinking anchor" be Force friction at the top and Force weight at the bottom?
2007-01-09 07:01:39 · 4 answers · asked by Bella J 1 in Science & Mathematics ➔ Physics
Force friction going up, buoyancy force going up, weight going down, also force of chain going up if there is a chain connected.
Obviously the downward weight arrow the longest...since it is sinking.
Drag = friction
2007-01-09 07:05:19 · answer #1 · answered by It'sjustme 2 · 1⤊ 0⤋
The anchor is sinking down so that the net force must be in downward direction.
Take the forces by assuming the anchor as a point.( or if U know, take forces about the centre of mass )taking any force in figure at top or bottom does not make a difference as long as U add them correctly.
2007-01-10 03:37:20 · answer #2 · answered by Anurag ® 3 · 0⤊ 0⤋
You only need to include the following forces:
Fg - force of gravity acting on anchor: = mg (mass * gravity); the vector points down.
Fb - buoyant force acting on anchor: = pVg (water density * submerged volume of anchor * 9.80); the vector points up.
Ft - tension due to upward pull by chain/rope that may be attached to anchor; the vector points up
* You most likely don't need to include the friction between the anchor and the water. You can include it if you want; the vector points upwards.
** In case you didn't know, when I say vector, I mean the arrow.
2007-01-09 15:36:29 · answer #3 · answered by عبد الله (ドラゴン) 5 · 0⤊ 0⤋
Did you consider the drag of the water?
2007-01-09 15:05:54 · answer #4 · answered by LovePinkPuffies 3 · 0⤊ 1⤋