Question 1 What are non-contact forces. Give few examples? Question 2 When a plastic pen is rubbed in dry hair, it attracts tiny pieces of paper. Which force is involved in this process? Question 3 A small piece pulls iron nails from a distance. Which force is involved in this process? Question 4 An inflated balloon was pressed against a wall after it has been rubbed … [Read more...] about Non-contact forces
gravitational force
Gravitation
Question 1 State the universal law of gravitation? Question 2 Define gravitation constant? Question 3 What is the value of G on earth and on the moon? Question 4 Which force is responsible for the moon revolving round the earth? Question 5 Describe how the gravitational force between two objects depends on the distance between them? Question 6 What happen to the … [Read more...] about Gravitation