11th Physics Chapter 6
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– Cell Structure: Covers the different parts of a cell such as the nucleus, mitochondria, cell membrane, etc.
– Cell Functions: Explains the roles and functions of different organelles within a cell.
– Cell Division: Describes the process of cell division, including mitosis and meiosis.
– Tissues: Discusses the types of tissues in the body and their functions.
– Plant Structure: Details the structure of plant cells including cell wall, chloroplasts, and vacuoles.
– Animal Structure: Focuses on the structure and functions of different cells in animals.
– Organ Systems: Explains the various organ systems in the human body and their functions.
– Homeostasis: Covers the concept of homeostasis and its importance in maintaining internal stability.
– Feedback Mechanisms: Describes how feedback mechanisms help regulate bodily functions to maintain homeostasis.
What is the relationship between force and torque in rotational motion?
Just as force produces acceleration, torque produces angular acceleration in a body. The angular acceleration is directly proportional to the applied torque and is inversely proportional to the moment of inertia of the body.
Explain the concept of angular acceleration and its calculation in the provided example.
The angular acceleration is calculated using the formula: alpha = torque / moment of inertia. In the example provided, the angular acceleration is computed to be 12.5 s^-2.
How is the centre of mass determined for irregular shaped bodies according to the chapter?
The centre of mass of an irregular shaped body is determined by suspending the body from different points, marking the vertical lines, and finding the intersection of the verticals which gives the centre of mass.
Explain the concept of power in rotational motion and compare it to linear motion.
Power in rotational motion is given by P = torque * angular velocity. It is analogous to power in linear motion, which is given by P = force * velocity.
How is the relationship between cross products and elementary cross products explained in the chapter?
The chapter explains the relationship between cross products and elementary cross products stating that cross products can be written in component form. The chapter provides several elementary cross products illustrations and how they relate to unit vectors and the right-hand screw rule.
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