Finding magnitude and direction of net torque on a dipole

AI Thread Summary
To find the net torque on a dipole with charges of ±3.0 microcoulombs separated by 3.20 nm in an electric field of 8000 N/C, the force is calculated as F = 2.4E-2 N. The effective lever arm is determined using l = 1.84E-9 m. The net torque is then computed using the formula T = qEl, leading to the conclusion that the torque acts in a specific direction, either clockwise or counterclockwise. The calculations confirm the relationship between force, lever arm, and torque in this context. The final answer provides the magnitude and direction of the net torque on the dipole.
ick84
Messages
2
Reaction score
0

Homework Statement



For the dipole shown, the charges are ± 3.0 micro coulombs separated by a distance of 3.20 nm and oriented so that the theta is 35.0 degrees. If the electric field has a magnitude of 8000 N/C, find the magnitude and direction (clockwise/counterclockwise) of the net torque on the dipole about the same axis as before.


Homework Equations



F = qE
torque = Fl

The Attempt at a Solution



first i solved for F = (3.0E-6 C)(8000N/C) = 2.4E-2 N

then solved for l = (3.20nm)(sin35) = 1.84E-9

net torque = 2 * F * l ??
 

Attachments

  • 1027679.jpg
    1027679.jpg
    7.1 KB · Views: 679
Physics news on Phys.org
NVM i solved it...

T = Fl
T = qEl
 
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »
Thread 'Correct statement about a reservoir with an outlet pipe'

Thread 'Correct statement about a reservoir with an outlet pipe'

The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
View full post »

Similar threads

Three equal forces applied to a rectangle, find net torque direction?
Replies
30
Views
4K
Calculate the magnitude and direction of the torque
Replies
1
Views
2K
Are the 2nd and 3rd problems in this video correctly solved? (charged dipole and organ pipe problems)
Replies
3
Views
1K
Effect of different magnetic fields on a magnetic dipole
Replies
25
Views
1K
Finding magnitude and direction of net force on a dipole.
Replies
4
Views
7K
Where on a rigid body is a resultant force applied?
Replies
11
Views
1K
What is the torque on an electric dipole in an electric field?
Replies
2
Views
2K
Finding the net torque about the axle?
Replies
3
Views
5K
Direction of friction in yo-yo where applied force is at top
Replies
8
Views
2K
Calculating Net Torque on Wheel Axle
Replies
7
Views
4K

Hot Threads

Recent Insights

Back
Top