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9th Class Physics Chapter 4 Online Preparation
9th Class English Medium Subjects
9th Class Urdu Medium Subjects
Online Short Questions For Chapter 4 "9th Class Physics English Medium Chapter 4 Preparation "
Try The Short Questions For 9th Class Physics English Medium Chapter 4 Preparation
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Total Questions10
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Available Sets12
Physics (New Book) - 9th Class Physics English Medium Chapter 4 Preparation
Question # 1
A ladder leaning at a wall as shown in figure is in equilibrium how
- Ans 1: The weight of ladder produces anticlock wise torque. The wall pushes the ladder at its tope end thus produce a clockwise torque. Both torques are equal and opposite and cancel their effect. So, the ladder is in state of equilibrium.
Prepare Complete Set Wise Questions For Chapter 4 "9th Class Physics English Medium Chapter 4 Preparation "
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Set 1
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Set 2
10 Questions
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Set 3
10 Questions
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Set 4
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Set 5
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Set 6
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Set 7
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Set 8
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Set 9
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Set 10
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Set 11
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Set 12
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9th Class Physics English Medium Chapter 4 Preparation - Set 1
Question # 1
A ladder leaning at a wall as shown in figure is in equilibrium how
- Ans 1: The weight of ladder produces anticlock wise torque. The wall pushes the ladder at its tope end thus produce a clockwise torque. Both torques are equal and opposite and cancel their effect. So, the ladder is in state of equilibrium.
9th Class Physics English Medium Chapter 4 Preparation - Set 2
Question # 1
Define rigid body and give an example
- Ans 1: Rigid Body: A body is composed of large number of particles. It the distance between all pairs of particles of the body do not change by applying a force, then it is called a rigid body
- Ans 2: Example: A door, A cylinder
9th Class Physics English Medium Chapter 4 Preparation - Set 3
Question # 1
A force of 150 N is making an angle of 40 with horizontal surface what is its vertical components.
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Ans 1: Given data: Give data F= 15N0=40
- Ans 2: Required Fy
9th Class Physics English Medium Chapter 4 Preparation - Set 4
Question # 1
What is head to tail rule
- Ans 1: When two or more than two vectors are added such that the head of the first vector is joined with tail of second vector and finally the tail of first vector is joined with the head of the second vector. This method of addition is called head to tail rule. The vector joining the tail of first vector to the head of last vector is called resultant vector a Graphical method used to find the resultant of two or more forces is called head to tail rule.
9th Class Physics English Medium Chapter 4 Preparation - Set 5
Question # 1
What is perpendicular
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Ans 1: The line facing the angle in a right angle triangle is called perpendicular e.g the side BC in the figure is perpendicularThe line have 90 angle with any plane is called perpendicular
9th Class Physics English Medium Chapter 4 Preparation - Set 6
Question # 1
Define parallel forces. Write n names of its types
- Ans 1: Parallel forces: Such forces which are parallel to each other are called parallel forces.
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Ans 2: Types: There are two types of parallel forces.Like parallel forces.Unlike parallel forces.
9th Class Physics English Medium Chapter 4 Preparation - Set 7
Question # 1
Difference between like and unlike forces?
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Ans 1: Like forces:
like forces are the forces that are parallel to each other and have the same direction -
Ans 2: Unlike forces:Unlike forces are the forces that are
parallel but have direction opposite to each other.
9th Class Physics English Medium Chapter 4 Preparation - Set 8
Question # 1
Define parallel forces.
- Ans 1: When a number of forces acting on a body in such a way that their point of action s are different but line of action are parallel to each other ,are called parallel forces.
9th Class Physics English Medium Chapter 4 Preparation - Set 9
Question # 1
Define torque
- Ans 1: Turning effect of a force is called torque or moment of force
- Ans 2: Unit: Its unit is newton metre (Nm)
9th Class Physics English Medium Chapter 4 Preparation - Set 10
Question # 1
What is line of action of force.
- Ans 1: A line along which a force acts is called line of action of the force.
9th Class Physics English Medium Chapter 4 Preparation - Set 11
Question # 1
Define equilibrium and give its example
- Ans 1: Equilibrium: A body is said toi be in equilibrium if no net force acts on it
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Ans 2: Examples: A book lying on a table is equilibrium because the weight of book and force of reaction of table are in opposite direction and hence cancel their effect.Consider a log of wood of weight W supported by two ropes Here the W is balanced by two forces f1 and f2 pulling the log upwards
9th Class Physics English Medium Chapter 4 Preparation - Set 12
Question # 1
Define rigid body and give an example
- Ans 1: Rigid Body: A body is composed of large number of particles. It the distance between all pairs of particles of the body do not change by applying a force, then it is called a rigid body
- Ans 2: Example: A door, A cylinder
9th class Physics Chapter 4 (English Medium)
Here you can prepare 9th Physics Chapter 4 online Short Questions Preparation (Turning Effect of Forces). Click the button for 100% free full Preparation.
