Answer:
The correct option is that (She decreases her moment of inertia, thereby increasing her angular speed.)
Explanation:
When an object is in circular motion, the vector that describes it is known as angular momentum. Angular momentum is conserved or constant when an object is spinning in a closed system and no external torques are applied to it. An example of conservation of angular momentum is seen when a woman is sitting on a spinning piano stool with her arms extended. Her angular momentum is conserved because the net torque on her is negligibly small as the friction is exerted very close to the pivot point.
When she folds her arms,her rate of spin increases greatly decreasing her moment of inertia. The work she does to pull in her arms results in an increase in rotational kinetic energy( that is, increase in her angular speed). I hope this helps, thanks!
Answer is in the question :)
Answer:
The highest pressure is located at points x & y.
Explanation:
The pressure will be greater at the X & y points, because they are at a deeper distance than the Z point. We must remember that the pressure is a function of the depth of the fluid, and is expressed by the following equation.
![P = densi*g*h\\where\\densi = density [kg/m^3]\\g = gravity [m/s^2]\\h = elevation [m]](https://tex.z-dn.net/?f=P%20%3D%20densi%2Ag%2Ah%5C%5Cwhere%5C%5Cdensi%20%3D%20density%20%5Bkg%2Fm%5E3%5D%5C%5Cg%20%3D%20gravity%20%5Bm%2Fs%5E2%5D%5C%5Ch%20%3D%20elevation%20%5Bm%5D)
The pressure is always measured with respect to the liquid level towards the depth of the fluid, so at greater depth greater pressure
Answer:
Force due to tension
Explanation:
Usually Ft, or F
, denotes force due to tension or tension force. An example of tension force would be if you were pulling an object on a string - the tension force is present within the string and causes the string not to break.
