Identify the magnetic north pole of Earth's magnet.

Physics

2 answers:

Stells [14]3 years ago

6 0

Answer:

Unless they came marked with “N” or “S,” the poles of a magnet look the same. One easy way to tell which pole is north and which is south is to set your magnet near a compass. The needle on the compass that normally points toward the north pole of the Earth will move toward the magnet's south pole.

Explanation:

olga_2 [115]3 years ago

3 0

Answer:

Its the up-er right. :D

ya welcome lol

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To solve this problem we will apply the concepts related to the balance of forces. We will decompose the forces in the vertical and horizontal sense, and at the same time, we will perform summation of torques to eliminate some variables and obtain a system of equations that allow us to obtain the angle.

The forces in the vertical direction would be,

$\sum F_x = 0$

$f-N_w = 0$

$N_w = f$

The forces in the horizontal direction would be,

$\sum F_y = 0$

$N_f -W =0$

$N_f = W$

The sum of Torques at equilibrium,

$\sum \tau = 0$

$Wdcos\theta - N_wLsin\theta = 0$

$WdCos\theta = fLSin\theta$

$f = \frac{Wd}{Ltan\theta}$

The maximum friction force would be equivalent to the coefficient of friction by the person, but at the same time to the expression previously found, therefore

$f_{max} = \mu W=\frac{Wd}{Ltan\theta}$