Answer:
I =
Explanation:
The moment of inertia for the beam is:
I =
Where is the mass of the beam and L is the lengh of the beam
note:
L = 2x
And for particles I is equal to:
I = MR^2
where M is the mass of the particle and R is the distance between the pivot and the particle.
Finally, the moment of inertia for this assembly is the sum of the moment of inertia of the particles and the beam. So:
I =
Answer:
Velocity of the electron = v = 1.2\times 10^8\ m/s.
Explanation:
Given,
Now total charge on the ring =
Potential energy due to the charged ring to the point on the x-axis is
Let v be the velocity of the electron at the center of the ring.
Total kinetic energy of the electron =
Now, From the conservation of energy,
the total potential energy of the electron at initially is converted to the total kinetic energy of the electron at the center of the ring,
Hence the velocity of the electron on the center of the charged ring is
Answer:
The magnetic field strength is 0.29 T.
Explanation:
Given that,
Length of current-carrying wire, L = 52 cm = 0.52 m
Current, I = 15 A
Magnetic force, F = 2.3 N
We need to find the magnetic field strength. We know that the magnetic force is given by :
B is magnetic field strength
So, the magnetic field strength is 0.29 T.