- #1
Electrostatic force and magnitude problem
- Thread starter loganblacke
- Start date
AI Thread Summary
The net electrostatic force on charge Q1 is zero, and its value is +4.99 nC. To find the magnitude of charge Qo, the formula Qo = (r0/r1)^2 * abs(q)*2cos θ is suggested. Participants emphasize the importance of treating forces as vectors, requiring the addition of forces based on their directions. The direction of each vector is determined by the line connecting the two charges. Understanding these vector components is crucial for solving the problem effectively.
- #2
tiny-tim
Science Advisor
Homework Helper
- 25,837
- 258
hi loganblacke! 
(have a theta: θ and try using the X2 icon just above the Reply box
)
forces are vectors, so you have to add them as vectors
(have a theta: θ and try using the X2 icon just above the Reply box
)forces are vectors, so you have to add them as vectors
start by writing out the three forces as three vectors
- #3
loganblacke
- 48
- 0
How do i determine the direction of the vectors?
- #4
tiny-tim
Science Advisor
Homework Helper
- 25,837
- 258
each vector will point along the line between the two charges
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19.
For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Let's declare that for the cylinder,
mass = M = 10 kg
Radius = R = 4 m
For the wall and the floor,
Friction coeff = ##\mu## = 0.5
For the hanging mass,
mass = m = 11 kg
First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on.
Force on the hanging mass
$$mg - T = ma$$
Force(Cylinder) on y
$$N_f + f_w - Mg = 0$$
Force(Cylinder) on x
$$T + f_f - N_w = Ma$$
There's also...
This problem is two parts. The first is to determine what effects are being provided by each of the elements - 1) the window panes; 2) the asphalt surface. My answer to that is
The second part of the problem is exactly why you get this affect.
And one more spoiler:
Similar threads
Hot Threads
-
Collision of a bullet on a rod-string system: query
- Started by palaphys
- Replies: 70
- Introductory Physics Homework Help
Recent Insights
-
Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect
- Started by Greg Bernhardt
- Replies: 7
- Quantum Physics
-
Insights What Exactly is Dirac’s Delta Function? - Insight
- Started by Greg Bernhardt
- Replies: 0
- General Math
-
Insights Relativator (Circular Slide-Rule): Simulated with Desmos - Insight
- Started by Greg Bernhardt
- Replies: 1
- Special and General Relativity
-
Insights Fixing Things Which Can Go Wrong With Complex Numbers
- Started by PAllen
- Replies: 7
- General Math
-
Insights Fermat's Last Theorem
- Started by fresh_42
- Replies: 91
- General Math
-
Insights Why Vector Spaces Explain The World: A Historical Perspective
- Started by fresh_42
- Replies: 0
- General Math