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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
Differentiate between torque and couple.
- Ans 1: Torque is produced by only only force one moment arm is there to produce the torque
- Ans 2: Couple: i) To produce couple there are two forces acting on a body ii) On couple arm is required to produce torque.
Prepare Complete Set Wise Questions For Chapter 4 "9th Class Physics English Medium Chapter 4 Preparation "
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Set 1
10 Questions
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Set 2
10 Questions
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Set 3
10 Questions
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Set 4
10 Questions
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Set 5
10 Questions
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Set 6
10 Questions
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Set 7
10 Questions
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Set 8
10 Questions
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Set 9
10 Questions
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Set 10
10 Questions
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Set 11
10 Questions
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Set 12
10 Questions
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9th Class Physics English Medium Chapter 4 Preparation - Set 1
Question # 1
Differentiate between torque and couple.
- Ans 1: Torque is produced by only only force one moment arm is there to produce the torque
- Ans 2: Couple: i) To produce couple there are two forces acting on a body ii) On couple arm is required to produce torque.
9th Class Physics English Medium Chapter 4 Preparation - Set 2
Question # 1
What is state of neutral equilibrium
- Ans 1: Neutral Equilibrium: If a body remains in its new position when disturbed from its previous position then body is said to be in neutral equilibrium
- Ans 2: Note In neutral equilibrium centre of gravity of body keeps its height.
9th Class Physics English Medium Chapter 4 Preparation - Set 3
Question # 1
Think of a body which is at rest but not in equilibrium
- Ans 1: A body thrown vertically upward at maximum height is at rest for a while but at that moment gravitational force
9th Class Physics English Medium Chapter 4 Preparation - Set 4
Question # 1
Give an example of a moving body which is in equilibrium
- Ans 1: A paratrooper coming down with the constant speed is in equilibrium as well as in motion
9th Class Physics English Medium Chapter 4 Preparation - Set 5
Question # 1
What is centre of gravity
- Ans 1: Centre of Gravity: A point where whole weight of the body appears to act vertically downward is called centre of gravity of a body e.g centre of gravity of uniform rod is centre of the rod
9th Class Physics English Medium Chapter 4 Preparation - Set 6
Question # 1
Why the handle of a door is placed at the outer edge of the door
- Ans 1: We can open or close door more easily by applying a force at the outer edge of a door rather than near the hinge (axist ) Because by this a long moment arm is obtained which produce more torque which helps to open the door more easily.
9th Class Physics English Medium Chapter 4 Preparation - Set 7
Question # 1
Define resolution of vectors
- Ans 1: To split up a force into its perpendicular components is called resolution of forces.
9th Class Physics English Medium Chapter 4 Preparation - Set 8
Question # 1
When a body is said to be in equilibrium
- Ans 1: A body is said to be in equilibrium if no net force acts on it.
9th Class Physics English Medium Chapter 4 Preparation - Set 9
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 10
Question # 1
On doubling the moment arm, what will be its effect on the value of torque
- Ans 1: On doubling the moment arm the value of torque will also be double
9th Class Physics English Medium Chapter 4 Preparation - Set 11
Question # 1
Define Resolution of forces
- Ans 1: Forces into their component forces is called resolution of forces
- Ans 2: Perpendicular components: The components of a vector which make an angle of 90 with each other are called perpendicular components.
- Ans 3: Direction of force F: The direction of force F with X-axis is given by using the trigonometric ratio.
9th Class Physics English Medium Chapter 4 Preparation - Set 12
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 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.
