kylepetten said:
), and rearrange. tiny-tim said:Hi kylepetten! Welcome to PF!
Looks good!
Now multiply both sides by m (hmm … why did you ever divide in the first place?
Dynamics in physics is the study of how objects move and interact with each other. It involves understanding the forces that act on objects and how these forces affect their motion.
Some examples of dynamics include the motion of a swinging pendulum, the acceleration of a car, and the force of gravity pulling objects towards the Earth.
Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This can be written as the formula F=ma, where F is the net force, m is the mass, and a is the acceleration.
Kinematics is the study of motion without considering the forces that cause the motion. Dynamics, on the other hand, takes into account the forces acting on objects and how they affect their motion. Thus, dynamics is an extension of kinematics, providing a deeper understanding of the causes of motion.
Dynamics is applicable to many real-life situations, such as calculating the forces acting on a car during a collision or determining the trajectory of a projectile. It can also be used in engineering and design to ensure the stability and safety of structures and machines. Understanding dynamics can also help in everyday activities, such as playing sports or driving a car.