Match the physical situation or physical system with the fundamental force(s) acting Question 6 options: Weak nuclear force. Gravitational force Electromagnetic forces, Gravitational Force Strong nuclear force. Electromagnetic and gravitational force. Electromagnetic force 1. Thin metal rod stretched by the large mass attached to it. 2. Planet orbiting the star 3. Electron orbiting the nucleus within an atom. 4. Quarks insides the neutron. 5. Beta decay of a neutron. 6. Friction between two massive objects