The weight of a body on the moon is one - sixth of its weight on the earth.How will the mass of the body vary ?
becomes 1/6 th
remains the same
becomes 6 times
becomes 1/8 th
S.I unit of pressure is
pascal
torr
tesla
bar
Who gave three laws of planetary motion?
Newton
Kepler
Einstein
Galileo
If the distance between two objects is halved ,then the gravitational force of attraction is
Doubled
Halved
4 times
Becomes(1/4)th
S.I unit of weight is:
kg
N
N/kg
N/m
For a freely falling body (falling vertically down wards) 'g' is
Negative
Positive
Zero
None of these
According to Kepler's Laws of Planetary Motion :
r2 α T3
r α T2
r3 α T2
r3 α 1/ T2
Two protons are kept at a separation of 1 femtometre (1 femtometre = 10-15 m ).The mass of a proton is 1.67 x 10-27 kg.The gravitational force between them is :
1.86 x 10-34 N
5.86 X 10-34 N
2.8 X 10-34 N
4.86 X 10-34 N
The density of copper is 8.9 g cm-3.Calculate the relative density of copper.
9.8
8.9
7.5
1
If m1 and m2 are the masses of two bodies and distance between them is reduced to 1/4 then what will be the gravitational force___________
16 times
12 times
10 times