The most common metals used for permanent magnets are iron, nickel, cobalt and some alloys of rare earth metals
Answer:
15 to 30 so anywhere in between there.
Answer:
The position of stable equilibrium is -a
And the period of small oscillations must be: c/(ma^3)
Explanation:
Since the potential is:

We first look for a position of stable equilibrium. This posiiton must satisfy two considtions, that the first derivative of the potential must vanish at this point and the second derivative must be positive.

Which vanish for
x = a ; x =-a
The second derivative of V(x) is:

And:

Therefore:
a)
The position of stable equilibrium is -a
And the period of small oscillations must be:

(c/(ma^3))^1/2
b)
Let's find the maximum amplitude if the particle starts at this point with velocity v
If this is the case, the total energy will be:
(mv^2)/2
And the maximum amplitude will be
x = a^3/c mv^2 = (m v^2 a^3)/ c
Answer:
1.379 m/s2
Explanation:
F=ma
There is a negative force from the elevator...
F = (715 kg) (-9.81 m/s2)
F = -7014.15 N
Cable + elevator = 8000 N + (-7014.15 N)
F = 985.85 N
a = F/m
985.85 N/715 kg = 1.379 m/s2
Answer:
the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion.