There is no specific minimum mass required to demonstrate gravitational attraction, as gravity is a universal force that acts between any two masses. Even tiny masses, such as those of small objects, experience gravitational attraction, but the effects may be negligible and difficult to observe without sensitive instruments.
Yes, you can demonstrate gravity with everyday objects. For example, dropping a ball and observing it fall to the ground illustrates the gravitational attraction between the Earth and the ball. This simple experiment shows that gravity acts on all masses, regardless of their size.
The strength of gravitational attraction between two objects is directly proportional to the product of their masses. According to Newton's law of universal gravitation, the force of gravity increases as the mass of either object increases. Thus, larger masses will exert a stronger gravitational pull on each other.
There is no strict threshold mass for gravitational effects to be noticeable, as gravity acts on all masses. However, the effects become more noticeable with larger masses. For example, the gravitational pull of planets and stars is significant due to their large mass, while the gravitational effect of small objects, like a pebble, is much weaker and often imperceptible without precise measurements.
Gravitational effects from small masses can be measured using sensitive instruments such as torsion balances or gravimeters. These devices can detect minute changes in gravitational force, allowing scientists to study the gravitational attraction between small masses in controlled experiments.