Final answer:
The length of the swing does not determine whether or not the child can swing. The statement is (b) False.
Step-by-step explanation:
The statement given is False.
The length of the swing (l = 1.75 m) is not relevant to whether or not the child can swing. The ability of the child to swing depends on the gravitational force and the tension in the chains.
As long as the tension in the chains is greater than the gravitational force, the child will be able to swing.
The principles at play involve kinetic and potential energy, as well as the harmonic motion of pendulums. This question inherently relies on understanding energy conservation and pendulum motion, blending concepts from kinematics and dynamics, typical of a high school physics curriculum.
The speed of the child at the lowest point and the height of the swing above the center of mass are crucial details for solving problems related to energy and period of swing.