No, tension is not necessarily greater than ma. Tension is simply the force that is pulling on an object, while ma represents the acceleration of the object. Depending on the circumstances, either tension or ma may be greater.
Tension can be calculated using the equation T = mg + ma, where T is the tension force, m is the mass of the object, g is the acceleration due to gravity, and a is the acceleration of the object.
Yes, tension can be negative. This occurs when the force pulling on an object is in the opposite direction of the object's motion. In this case, the tension force is considered to be "negative tension."
The tension in a system can be affected by several factors, including the mass of the object, the acceleration of the object, and the force pulling on the object. Other factors such as friction and air resistance may also affect tension.
Tension is important in physics because it is a fundamental force that affects the motion of objects. It helps us understand how objects move and interact with each other. Tension is also used in many real-world applications, such as in bridges and cables, to ensure structural stability and safety.