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Equilibrium
Test Description: Grade 8 Hook's law
Instructions: Answer all questions to get your test result.
1) At equilibrium the two forces F1 F2 are such that :
A
4- None of the above choices
B
2- F1 Smaller F2
C
1- F1 greater F2
D
3- Equal
2) ( R ) (W) vectors of body rests on a table are of
A
4- opposite directions
B
1- Same Point of application
C
2- same Direction
D
3- Different Magnitude
3) In a spring L0 represents :
A
2- Elongation
B
3- Initial length
C
4- Weight
D
1- New length
4) the unit of weight in SI unit is:
A
4- g
B
1- N
C
2- Kg
D
3- Ton
5) ∆L = x represents :
A
4- Force
B
1- New length
C
3- Initial length
D
2- Elongation
6) The formula of a weight is W = :
A
3- m - g
B
2- mg
C
4- m + g
D
1- m/g
7) The law T = K x is called :
A
4- None of the above choices
B
1- Hook’s law
C
3- Ampere’s law
D
2- Ohm’s law
8) : If K = 1N/cm then its value is:
A
3- 1000N/m
B
1- 1 N/m
C
4- 100N/m
D
2- 10N/m
9) Given the elongation of spring is 10cm and K =1N/cm then the weight of load is
A
4- 0.1N
B
2- 10N
C
1- 1N
D
3- 100N
10) The elongation of spring is proportional to its elongation this statetement of
A
Ohm's law
B
Current law
C
Hook's law
D
Joule's law
*select an answer for all questions
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