Page 74 - Force 10
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Assignment
❑Define free fall and weightlessness.
❑Write some conditions of weightlessness.
❑Write the conclusion drawn from coin and feather experiment.
Numerical.
22
5
❑The moon is 3x10 Km away from Nepal and the mass of the moon is 7x10 Kg. Calculate the
force with which the moon pulls every kilogram of water in our rivers.
2
❑Acceleration due to gravity on the earth is 9.8m/s . Calculate the mass of the earth
6
assuming that it is a sphere with radius of 6.4x10 m.
❑If the earth is compressed to the size of the moon what will be the weight of a 100kg mass
on that squeezed earth?
24
6
provided that the mass of the earth is 6x10 kg and the radius of the moon 1.7x10 m .
24
❑The mass of the earth is 6x10 Kg and its radius is 6400km. Calculate the value of
acceleration due to gravity at the top of mount Everest. ( The height of Mount Everest from
the surface of the earth is 8848m ). Also find the weight of 60 kg man at that point.
❑If an object at a distance of 6400km from the centre of the earth weighs 10N, what will be
its weight if it is lifted to 12800km from the center of the earth ?
