Final answer:
The question lacks sufficient information to calculate the tension in string number 1 accurately. In an Atwood machine, tension can be found using a formula that considers both masses and gravitational acceleration. However, actual tension calculation requires specific details on the system's acceleration or other acting forces.
Step-by-step explanation:
To determine the tension in string number 1, we assume that you are referring to an Atwood machine, which is a common setup in physics problems involving tensions and pulleys. In an Atwood machine, two masses are connected by a string that goes over a pulley.
The tension in the string is what we're trying to find. Unfortunately, the given question does not provide enough information to solve for the tension directly, as the setup of the system is not fully described. Typically, you would need to know the acceleration of the system, which is influenced by both masses and possibly friction if applicable, to calculate the tension.
In general terms, to calculate the tension, we would use the formula derived from Newton's second law for each mass (m1 and m2), together with the constraint that the acceleration of both masses is the same. If the pulley is frictionless and the only forces to consider are gravity and tension, then the equation for tension (T) could be expressed in terms of the masses (m1, m2) and gravitational acceleration (g), like so:
T = (2*m1*m2*g) / (m1 + m2)
Without additional details on the acceleration or any other forces acting in the system, it's not possible to provide an exact value for the tension in string number 1.