1. SI unit of pressure is
2. The amount or the strength of force is called its
3. Pressure in solid depends upon
and
4. Pressure in liquids depends upon
and
5. Force generated by moving of non living materials is called
6. Give 2 examples of contact forces
7. Name the scientist who invented a pump to extract air from a
vessel
8. Name the force which acts upon another body without any
connector
9. Name the type of force involved in the following.
a) To pick your school bag. b) To collect scrap iron from garbage.
c) To push or pull a loaded trolley ay supermarket
d) Flying of seeds away from each other in plastic bag when gently
10. Name the device used to measure pressure in fluids.
rubbed
11. How much force is required to lift a mass of 1Kg (10N/IN).
Frictional force)
12. A rolling ball stops after sometime due to (gravitational force
13. When 2 forces are applied at the same point but in opposite directions the net force is
equalto the (sum/ difference of forces acting separately.
14. Force used to stretch the spring is (muscular force/ magnetic force)
15. Application of force brings the change in
(b)speed and direction of object
(c) position of object
a) shape and size of object
(d) all the above
Answers
Answers to the questions are provided below:
1. The correct answer to this question is PASCAL (SI unit of pressure).
2. An answer to this question is MAGNITUDE of force.
3. The correct answer in the blanks is FORCE and AREA OF CONTACT.
4. The answer to this question is DENSITY and HEIGHT OF COLUMN OF LIQUID.
5. The right answer is MECHANICAL FORCE.
6. Two examples of contact forces are:
- Moving a car by pushing force on a road or hill
- Kicking a ball from rest on the ground
7. The name of the scientist of this invention is OTTO VON GUERICKE.
8. This type of force is called NON CONTACT FORCE.
9. a. Force involved is MUSCULAR FORCE.
b. Force involved in this case MAGNETIC FORCE.
c. Force involved to push or pull trolley is MUSCULAR FORCE, FRICTIONAL FORCE AND MECHANICAL FORCE.
d. Force involved is ELECTROSTATIC FORCE.
10. Device used for measuring pressure is MANOMETER.
11. Force is 10 Newton.
Given: Mass = 1 Kg
To find: Force =?
Solution:
Force = mass × gravitation. (g = 10 m/s²)
Force = 1 Kg × 10 m/s²
Force = 10 N
12. Ball stops due to the FRICTIONAL FORCE.
13. The net force in this case is DIFFERENCE OF FORCES.
14. Force used in this case is MUSCULAR FORCE.
15. The correct answer to this question is option d: ALL OF THE ABOVE, as all options are correct.
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Concept Introduction:
A force is best defined as a push or pull upon an entity evolving from one objects interactivity with an another object. Whenever there is an interaction between two entities, there is always force acting upon them. The formula for resulting force is F = m ⨉ a.
Where, F= force , m=mass of the object and a= acceleration.
Explanation:
We have been given a question which comprises of 15 different questions based on random physical quantities such as force, pressure etc.
We have to find the proper answer as per the following questions.
Final Answer:
1. The correct answer to this question is PASCAL (SI unit of pressure).
2. An answer to this question is MAGNITUDE of force.
3. The correct answer in the blanks is FORCE and AREA OF CONTACT.
4. The answer to this question is DENSITY and HEIGHT OF COLUMN OF LIQUID.
5. The right answer is MECHANICAL FORCE.
6. Two examples of contact forces are:
Moving a car by pushing force on a road or hill
Kicking a ball from rest on the ground
7. The name of the scientist of this invention is OTTO VON GUERICKE.
8. This type of force is called NON CONTACT FORCE.
9. a. Force involved is MUSCULAR FORCE.
b. Force involved in this case MAGNETIC FORCE.
c. Force involved to push or pull trolley is MUSCULAR FORCE, FRICTIONAL FORCE AND MECHANICAL FORCE.
d. Force involved is ELECTROSTATIC FORCE.
10. Device used for measuring pressure is NANOMETER.
11. Force is 10 Newton.
Given: Mass = 1 Kg
To find: Force =?
Solution:
Force = mass × gravitation. (g = 10 m/s²)
Force = 1 Kg × 10 m/s²
Force = 10 N
12. Ball stops due to the FRICTIONAL FORCE.
13. The net force in this case is DIFFERENCE OF FORCES.
14. Force used in this case is MUSCULAR FORCE.
15. The correct answer to this question is option d: ALL OF THE ABOVE, as all options are correct.
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