The angular acceleration of a pulley is described under the equation,
So things clearing,
b) For point B it is necessary to make a sum of Forces,
In this way,
(1)
For block 2, we have the following relationship,
(2)
So,
(3)
Substituting (1) and (2) in (3)
So,
<em>**Note that</em> 
c) For this point we need to use (1)
using (2)
Answer:
The answer is the 3rd option!
Answer:
When two objects interact, each one exerts a force on the other that can cause energy to be transferred to or from the object. For example, when energy is transferred to an Earth-object system as an object is raised, the gravitational field energy of the system increases. This energy is released as the object falls; the mechanism of this release is the gravitational force. Likewise, two magnetic and electrically charged objects interacting at a distance exert forces on each other that can transfer energy between the interacting objects.
Explanation:
Even when an object is sitting still, it has energy stored inside that can be turned into kinetic energy (motion). ... A force is a push or pull that causes an object to move, change direction, change speed, or stop. Without a force, an object that is moving will continue to move and an object at rest will remain at rest.
Answer:
The first is that the object moves
