One situation in which force is created is when an object is moving and a force is created to stop that movement. Second situation is when an object is moving circularly and a force is created to move it towards the middle of the circle. The third situation is when a force is created that goes in the same direction as an object that is in movement.
Answer:
The answer is below
Explanation:
a) The location ӯ of the center of mass G of the pendulum is given as:

b) the mass moment of inertia about z axis passing the rotation center O is:

c) The mass moment of inertia about z axis passing the rotation center O is:

Answer:
Explanation:
Person A's velocity relative to the train is 0. Therefore, the pitch of the horn will not change.