How Is Torque Generated by an Electric Field on a Charged Rod?

AI Thread Summary
The discussion centers on calculating the net torque on a charged rod placed in a constant electric field. The rod, measuring 3.5 m, has a +10.0 µC charge at one end and a -10.0 µC charge at the other. The external electric field, with a magnitude of 6.00 x 10^3 N/C, is perpendicular to the rod, influencing the forces acting on each charge. The torque can be determined by analyzing the forces on both ends of the rod and their distances from the pivot point. Understanding the force exerted by the electric field on a point charge is crucial for solving this problem.
nckaytee
Messages
39
Reaction score
0
I have no clue where to start on this problem

A long, thin rod (length = 3.5 m) lies along the x axis, with its midpoint at the origin. In a vacuum, a +10.0 µC point charge is fixed to one end of the rod, while a -10.0 µC point charge is fixed to the other end. Everywhere in the x, y plane there is a constant external electric field (magnitude = 6.00 103 N/C) that is perpendicular to the rod. With respect to the z axis, find the magnitude of the net torque applied to the rod.
 
Physics news on Phys.org
Find the force on each end of the rod. What is the force of the electric field on a point charge given by?
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Why does a diamagnetic rod align perpendicular to a magnetic field?
Replies
8
Views
2K
Find the electric field at a point away from two charged rods
Replies
11
Views
4K
Prove that the field due to a circular arc is same as its bounded tangent at the centre of curvature
Replies
23
Views
1K
Electric field in a rotating rod in a magnetic field
Replies
3
Views
2K
Why is electric field at the center of a charged disk not zero?
Replies
4
Views
3K
Electric field at a point (point charge and semi-circle rod)
Replies
3
Views
6K
Electric Field from a Charged Semicircular Rod
Replies
2
Views
3K
Confused about direction of electric field
Replies
7
Views
3K
How do we know the point of 0 electric field is on the axis?
Replies
3
Views
829
Find electric field a distance P from a charged rod
Replies
7
Views
2K

Hot Threads

Recent Insights

Back
Top