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| bio | website | facebook.com/natebrower |
|---|---|---|
| location | Huntsville, AL | |
| age | 26 | |
| visits | member for | 2 years, 6 months |
| seen | 20 hours ago | |
| stats | profile views | 4 |
Mechanical Engineer from Huntsville, AL.
New homeowner since 3/5/10
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Nov 28 |
comment |
Solving an indeterminate triangle truss structure (statics) The first setup drawn is not statically indeterminate. If you had a truss member vertically from A to B, then it would be. The second setup drawn is not actually constrained and will collapse at the slightest imbalance. Use the joint method and consider the point at which the force is applied. You know the forces in the two members are in the direction of the members. You've got two equations (x and y) and two unknowns - the magnitudes. |
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Nov 16 |
awarded | Critic |
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Nov 14 |
comment |
Is it possible to calculate weight of person with sensors found in today's smartphone? There are a few problems with your train of thought. Objects accelerate due to gravity at the same rate, no matter their mass. True, there will be small differences due to air resistance on the person's cross-sectional area, and F=G*M*m/r^2 does vary minutely by the mass of the person, but not anywhere on the magnitude that can be picked up by a MEMs accel. Another issue is that accels don't measure velocity - they measure acceleration. |
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Nov 9 |
comment |
Force on rope with accelerating mass on pulley Think of it this way: If you stand next to a table and push downward on the table with your hands, the floor under your feet will be holding up your weight minus the weight you place on the table. So the tension on the rope (seat side) is holding up the kid's weight minus the weight he places on the other side of the rope. |
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Nov 8 |
comment |
Force on rope with accelerating mass on pulley You still need to add F acting upward on the kid, since he's exerting F down on the other end of the rope. |
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Nov 8 |
awarded | Teacher |
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Nov 7 |
comment |
Why do rockets have multiple stages? This was my first thought as well when reading the question. |
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Nov 7 |
comment |
Force on rope with accelerating mass on pulley I went ahead and gave a full solution to this since you had already posted the correct answer yourself. |
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Nov 7 |
answered | Force on rope with accelerating mass on pulley |
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Nov 7 |
comment |
Force on rope with accelerating mass on pulley A diagram would be very helpful. |
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Feb 22 |
awarded | Supporter |
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Nov 9 |
awarded | Autobiographer |
