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Physics 1

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Satreesamutprakarn School

Physics 1

30211

Presented By : Mr. TaywanDeejaras

Satreesamutprakarn School

Physics

Presented By : Mr. TaywanDeejaras

Satreesamutprakarn School

Measurement

Presented By : Mr. TaywanDeejaras

Measurement

Mr.TaywanDeejaras : Satreesamutprakarn School

Fundamental Quantities

(Fundamental Quantities)

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Derived Quantities

(Derived Quantities) ( )

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Analog

(Analog)

5.05

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Analog

4.50

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Analog

5.00

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Analog

DC

4.4

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Analog

AC

112

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Error

(Error)

1.

Errer (least count )

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Error

0.1 cm 1 mm

5.050.05

Mr.TaywanDeejaras : Satreesamutprakarn School

Error

.........

0.2

4.4

4.4 0.1

Mr.TaywanDeejaras : Satreesamutprakarn School

2.

Error

= 102 volt V = 102 1 volt

11.40s

t = 11.40 0.01 s

Mr.TaywanDeejaras : Satreesamutprakarn School

3. 10 4

Error

Mr.TaywanDeejaras : Satreesamutprakarn School

Error

10

10 ........

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Error

(Error)

Mr.TaywanDeejaras : Satreesamutprakarn School

()

Prefixes

(Prefixes)

Mr.TaywanDeejaras : Satreesamutprakarn School

Prefixes

Mr.TaywanDeejaras : Satreesamutprakarn School

Prefixes

100

Mr.TaywanDeejaras : Satreesamutprakarn School

0.4

Prefixes

= 10 -3

= 10 3

10 -3

=

= 10-6

10 3

0.4 x 10 -6

Mr.TaywanDeejaras : Satreesamutprakarn School

2.7

Prefixes

= 10 0

= 10 -6

10 0

=

10 -6

= 106

2.7 x 10 6

Mr.TaywanDeejaras : Satreesamutprakarn School

30

Prefixes

= 10 -6

= 10 0

10 -6

=

10 0

= 10-6

30 x 10 -6

Mr.TaywanDeejaras : Satreesamutprakarn School

0.8 /

Prefixes

= 10 0

= 10 3

10 0

=

10 3

= 10-3

Mr.TaywanDeejaras : Satreesamutprakarn School

Prefixes

= 10 -6

= 10 0

= 10-6

10 -6

10 -3

=

10 3

10 -6

= 0.8 x

= 0.8x103

0.8 x 10 3

Mr.TaywanDeejaras : Satreesamutprakarn School

Physics Graph

(Physics Graph)

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x y x y y = mx + c m c y

Linear Graph

(Linear Graph)

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Linear Graph

1

y

y = mx

x

y x

+ s = vt

Mr.TaywanDeejaras : Satreesamutprakarn School

Linear Graph

2

y

y = mx + c

c

x

+ v = at + u

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Linear Graph

3

y

x

y = mx - c

- c

+

Mr.TaywanDeejaras : Satreesamutprakarn School

Linear Graph

x y

tan

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Parabola Graph

(Parabola Graph)

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Parabola Graph

= a/2

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Parabola Graph

Mr.TaywanDeejaras : Satreesamutprakarn School

Hyperbola Graph

(Hyperbola Graph)

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Hyperbola Graph

Mr.TaywanDeejaras : Satreesamutprakarn School

Satreesamutprakarn School

Any Question For Measurement ??

Presented By : Mr. TaywanDeejaras

Satreesamutprakarn School

Vector

Presented By : Mr. TaywanDeejaras

(Vector)

Vector

(Vector Quantity) (Scalar Quantity)

Mr.TaywanDeejaras : Satreesamutprakarn School

(Addition of Vectors)

Addition of Vectors

(Resultant Vector)

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(Resultant Vector)

Addition of Vectors by Drawing

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Drawing

R

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Drawing

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Drawing

R

Mr.TaywanDeejaras : Satreesamutprakarn School

A, B C

C

-C

30o

30o

Addition of Vectors by Drawing

B

A

-A

-B

Mr.TaywanDeejaras : Satreesamutprakarn School

A+B

Addition of Vectors by Drawing

B+A

A

R

B

B

R

A

A+B = B+A

YES

Mr.TaywanDeejaras : Satreesamutprakarn School

A+B

Addition of Vectors by Drawing

B+A

A

R

B

Mr.TaywanDeejaras : Satreesamutprakarn School

A-B= A+(-B)

Addition of Vectors by Drawing

B-A= B+(-A)

R

R

B

- B

A

- A

A-B= B-A

NO

A-B= - (B-A)

YES

Mr.TaywanDeejaras : Satreesamutprakarn School

A+B+C

Addition of Vectors by Drawing

R

A

B

C

30o

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Calculation

16

32

R = (+16)+(+32) = +48

48

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Calculation

32

16

R = (+16) +( 32) = 16

16

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Calculation

y

R

x

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Calculation

A

R

Bsin

B

B

A

Bcos

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Calculation

R

Bsin

A

Bcos

Mr.TaywanDeejaras : Satreesamutprakarn School

sin

Addition of Vectors by Calculation

R

B

A

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Calculation

A B

B = 30

37o

A = 50

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Calculation

A B

B = 30

143o

37o

A = 50

Mr.TaywanDeejaras : Satreesamutprakarn School

(Vector Component)

2

2

Vector Component

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Vector Component

sin = y/R

R

y = Rsin

y

cos = x/R

x

x = Rcos

Rsin Rcos

Mr.TaywanDeejaras : Satreesamutprakarn School

Vector Component

R

R = 20

20sin37o

37o

20cos37o

Mr.TaywanDeejaras : Satreesamutprakarn School

Vector Component

R

50sin53o

53o

R = 50

50cos53O

Mr.TaywanDeejaras : Satreesamutprakarn School

Vector Component

R

R = 40

40sin60o

30sin60o

60o

40cos60o

60o

R = 30

30cos60o

Mr.TaywanDeejaras : Satreesamutprakarn School

W=10 N

Vector Component

W

10sin37o

37o

10cos37o

37o

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Calculation

A, B C

B = 30

30sin53o

30cos53o

53o

A = 40

53o

50sin53o

C = 50

50cos53o

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Calculation

30sin53o

A = 40

30cos53o

50sin53o

50cos53o

Rx = 30cos53o + 50sin53o - 40

= 18 + 40 - 40 = 18

Ry = 30sin53o 50cos53o

= 24 30 = -6

Mr.TaywanDeejaras : Satreesamutprakarn School

Addition of Vectors by Calculation

Rx = 18

R

Ry = 6

R =

()R =

Mr.TaywanDeejaras : Satreesamutprakarn School

Multiplication of Vectors

(Multiplication of Vectors)

1.

2. 2

2.1 (Scalar Product)

2.2 (Vector Product)

Mr.TaywanDeejaras : Satreesamutprakarn School

Scalar Product

(Scalar Product)

a b = ab cos

a b a b

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Vector Product

(Vector Product)

a x b = ab sin

a b a b

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Vector Product

c = a b

b

b

c = b a

a

a

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Vector Product

Mr.TaywanDeejaras : Satreesamutprakarn School

Satreesamutprakarn School

Any Question For Vetor ??

Presented By : Mr. TaywanDeejaras