PHYSICS AND HEALTHY REASON #1

Do you have difficulty learning Physics?

Well that is because the younger siblings have the wrong way of learning,

The younger siblings always ship the complicated physics formula.

Indeed the physics formula is difficult to memorize and more. Although you all memorize all the physics formulas, it is not certain that you can do physics problems, now that makes it difficult for you to learn physics.

Now let me tell you an easy way to learn physics with common sense (logic).

Well, how do you do: remind the Pitagorean numbers:

3     4     5     if multiplied by 2 becomes     6     8     10

3     4     5     if multiplied by 10 becomes     30     40     50

3     4     5     if multiplied by 3 becomes     9     12     15

6     8     10     if multiplied by 10 becomes     60     80     100

Now we try to equilibrium problem taken from the problem of SMPTN:

Figure 1

Look at the number of Pythagoras, the number that hasn't come out yet, the number that hasn't come out yet is the number 50, then the answer is 50 N. Easily, who says physics is hard, let's study physics from now on.

The real way:

Formula:

ΣFx = 0     ΣFy = 0

Answer:

ΣFx = 0

T Cos α - F = 0     or     T Cos α = F     or     T Cos α = 30 …………………… (1)

ΣFy = 0

T Sin α - W = 0     or     T Sin α = W     or     T Sin α = 40 …………………… .. (2)

Equation (2) divided by equation (1) is obtained:

TSin α/TCosα = 40/30

tan α = 4/3     so     α = 53

Sin 53 = 40

T 0.798 = 40

So     T = 40 / 0.798 = 50.

Equate the results.

This method is specifically for multiple choice questions, because the numbers must be special, because students cannot use calculators.