Collect different types of lamina and determine their centres of gravity.

If a body of mass 40 kg is kept at a distance of 0.5 m from a body of mass 60 kg, what is the mutual force of attraction between them?

Observe the figure and complete the table.

Prepare a table of things that can keep their stability by overcoming great disturbances.

The values of g on different planets are given. Determine the weight of a body of mass 100 kg on these planets.