Moment of force,class 8

🔧 Moment of Force (Torque)

🎯 Learning Objectives

• Understand the concept of moment of force.
• Learn the formula M = F × d.
• Identify factors affecting moment of force.
• Relate torque to daily life examples.

🧩 Competencies

• Conceptual Understanding – Torque and turning effect
• Observation Skills – Identifying real-life examples
• Analytical Thinking – Relation between force and distance
• Application Skills – Using tools like spanner
• Communication Skills – Explaining concepts clearly

📊 Learning Outcomes

• Defines moment of force as turning effect.
• Applies formula M = F × d.
• Explains factors affecting moment.
• Identifies clockwise and anticlockwise moments.

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🎥 Evidence (Student Demonstration)

Upload or embed student experiment video:

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📝 Worksheet (Who Am I - MCQ)

1. I am the turning effect of a force.

Force Energy Moment of Force Work

2. I am the formula used to calculate moment.

F = ma M = F × d V = IR P = VI

3. I am the distance from pivot.

Force Distance Time Velocity

4. I increase moment when I increase.

Force Distance Both None

5. I am the point about which rotation occurs.

Axis Pivot Centre Base

6. I am positive rotation direction.

Clockwise Anticlockwise Upward Downward

7. I am used to tighten nuts.

Hammer Spanner Screwdriver Knife

8. I am the SI unit of moment.

joule newton metre watt pascal

9. Increasing distance increases me.

Force Moment Work Power

10. Opening a door is an example of me.

Work Force Moment of Force Energy

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🧠 Higher Order Thinking Questions

1. Why is it easier to open a door from the handle?

Because distance from pivot is more, increasing moment.

2. Why do we use long spanners?

To increase perpendicular distance and moment.

3. What happens if force increases but distance decreases?

Moment may remain same or change depending on values.

4. Why do children sit farther on a seesaw?

To increase moment and balance weight.