Equilibrium of Forces
This lesson covers the concepts of static and dynamic equilibrium. It explains resultant and equilibrant forces, the moment of a force, and the conditions for equilibrium under non-parallel forces. The lesson also discusses the center of gravity and its effect on stability.
- 15:12 “Examples now. Let's look at this. A 100-metre uniform road, 100-metre uniform road, as a load of 40 Newton suspended at 20 centimeters from one end. If the full crew is at the center of gravity, calculate the force that...”
- 16:07 “The center of gravity here, looking at it, is 50. So if the full crew is here, that means that is 50. Ah, the question says that a load of 40 Newton is suspended at 20 centimeters. So let's assume this place is 20 centim...”
- 10:00 “this bar will turn in the clockwise direction because if force is being exerted at the end of the bar. So clockwise moments about O must be equal to anticlockwise moments about O for this bar to balance horizontally. So...”
Fundamental and Derived Quantities
This lesson covers the definitions of fundamental and derived quantities in physics. It explains how fundamental quantities serve as the base for deriving other quantities and the importance of measurement in physical science.
- 24:36 “at the pull of the x in the equator, the weight of an object varies. So the fifth one is that it is major using physical balance and the weight of an object it is major using is spring balance. So one important thing we...”
- 21:17 “This is the mass times the weight, the acceleration due to gravity. And the mass is always major in kilogram as said earlier why the g, which is the acceleration due to gravity, is having an equivalent unit with the norm...”
- 23:44 “its scalar quantity, but a weight as magnitude and the direction and hence its vector quantity. The third one is it is the amount of matter contained in a body as explained earlier, the amount of matter, which is the fun...”