A 2.31-kg rope is stretched between supports that are 10.4 m apart, and has a tension in it of 49.2 N. If one end of the rope is
1 answer:
Answer:
The resulting disturbance takes approximately 0.70 seconds to reach the other end.
Explanation:
The velocity of a disturbance on a rope depends on the physical properties of the material and the tension exerted to it, the equation is:
(1)
With v the velocity of the disturbance, T the tension of the rope and μ the linear density of the rope. The linear density of the rope is the relation between mass M and length L so we have:
(2)
Using (2) on (1):
(3)
If we assume the velocity of the disturbance is constant, it will take for the resulting disturbance to reach the other ends a time t:
(4)
You might be interested in
Answer:
-4.0 N
Explanation:
Since the force of friction is the only force acting on the box, according to Newton's second law its magnitude must be equal to the product between mass (m) and acceleration (a):
(1)
We can find the mass of the box from its weight: in fact, since the weight is W = 50.0 N, its mass will be
And we can fidn the acceleration by using the formula:
where
v = 0 is the final velocity
u = 1.75 m/s is the initial velocity
t = 2.25 s is the time the box needs to stop
Substituting, we find
(the acceleration is negative since it is opposite to the motion, so it is a deceleration)
Therefore, substituting into eq.(1) we find the force of friction:
Where the negative sign means the direction of the force is opposite to the motion of the box.
Answer:
Explanation:
q = Charge in the potassium ion =
e = Charge of electron =
= Change in potential =
Change in electric potential is given by
The energy is