Activity 8.11 Class 9 Science Chapter 8 Motion Solution

 Activity 8.11 Class 9 Science Chapter 8 Motion Solution

Activity 8.11 Class 9 Science belongs to Chapter 8 Motion Class 9 Science. You will get a complete solution with an explanation and a conclusion. After reading activity 8.11, you will be able to answer the questions based on the activity.

Activity 8.11 Class 9 Science Chapter 8

 

You are suggested to study NCERT activity 8.11 class 9 science chapter 8 explanation with a conclusion so that you can attempt questions based on the activity 8.11 class 9 science.

Activity 8.11 Class 9 Science

    ·     Take a piece of thread and tie a small piece of stone at one of its ends. move the stone to describe a circular path with constant speed by holding the thread at the other end as shown in the figure.

    ·     Now, let the stone go by releasing the thread.

    ·     Can you tell the direction in which the stone moves after it is released?

    ·     By repeating the activity a few times and releasing the stone at different positions of the circular path.   Check whether the direction in which the stone moves remain the same or not.

       

Activity 8.11 Class 9 Science Observation & Explanation

The stone moves along a straight-line tangent to the circular path.

When this activity is repeated, again and again, the stone goes perpendicular to the string.

 Why does it happen?

When an object moves in a circular path with uniform speed, its motion is called uniform circular motion.

In a uniform circular motion, the direction of an object regularly changes which results in a change in velocity(acceleration) and due to this, an outward force is produced on the object(stone).

At this time the string remains in tension, when the stone is released, it goes in a straight line.

 

Activity 8.11 Class 9 Science Conclusion

The stone in uniform motion in a circular path goes perpendicular to the circular path.

Related Topics

   1. Activity 8.1

   2. Activity 8.10

   3. Solution of chapter 8