No, objects with no mass do not have gravitational force. Gravity is a fundamental force of nature that arises due to the presence of mass. According to Newton's law of universal gravitation, the force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
If an object has zero mass, it means it has no gravitational influence on other objects. For example, photons (particles of light) are massless, and therefore they do not exert a gravitational force. However, it's important to note that even massless particles can be affected by gravity, as they follow the curvature of spacetime caused by massive objects.
The concept of gravity in the framework of general relativity, proposed by Albert Einstein, expands upon Newton's understanding of gravity. In general relativity, the force of gravity is described as the curvature of spacetime caused by the presence of mass and energy. Massless particles, such as photons, follow the curvature of spacetime, causing their paths to be influenced by gravitational fields.
In summary, objects without mass do not generate gravitational forces, but they can still be influenced by gravitational fields created by massive objects.