Yosty22 said:Draw the free body diagrams. Make sure you keep in mind that they are not all on a flat surface. Once they are drawn out, seeing how to solve for other things might be easier to visualize.
Some body said:I tried for million times , but still can't solve it , I have about 4 anknown things , tension between A and B , mass for object C , tension between B and C , acceleration for the system before and after cutting the rope between A and B
Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. This means that the greater the force applied to an object, the greater its acceleration will be. Similarly, the more massive an object is, the less it will accelerate in response to a given force.
Newton's second law also tells us that when two or more objects are connected, the total force acting on each object is equal. This means that if one object exerts a force on another object, the second object will also exert an equal but opposite force on the first object.
Newton's second law applies to everyday situations such as pushing a shopping cart, throwing a ball, or riding a bike. In all of these situations, the force applied to the object (shopping cart, ball, bike) will determine how much it accelerates.
The mathematical equation for Newton's second law is F = ma, where F represents the net force acting on an object, m represents the mass of the object, and a represents the acceleration of the object.
Newton's second law is closely related to Newton's first and third laws of motion. Newton's first law (also known as the law of inertia) states that an object will remain at rest or in motion with constant velocity unless acted upon by an external force. Newton's third law (the law of action and reaction) states that for every action, there is an equal and opposite reaction. Together, these three laws explain the behavior of objects in motion.