1. A bar of metal has a mass 200 g and a certain weight Mass remains the same when weighted at equator but weight decreases. Why?
2. Differentiate between mass and weight. Write any three differences.
3. How many Newtons are there in Ikg weight?
4. Give reason:
(a) A piece of paper takes much longer to fall than a stone through the same distance,
when both are dropped simultaneously from roof.
(b) The mass is constant everywhere whereas the weight keeps changing.
(e) The value of g keeps changing as we move away from the earth whereas value of G
remains constant all over the universe?
5. The gravitational force between two objects is 100N. How should the distance between
the objects be changed so that force between them becomes 50N?