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
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
4 times
10 times
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 mass of a body is measured to be 12kg on earth. If it is taken to moon, the mass will be:
72kg
2kg
12kg
24kg
A ball is thrown up with a speed of 15 m/s.How high will it go before it begins to fall? (g = 9.8 m/s2)
13.4 m
12.4 m
11.4 m
14.5 m
The earth attracts a body of mass 2kg kept on its surface with a force of
9.8 N
19.6 N
6.67 x 10-11N
1/9.8 N
The earth's gravitational force causes an acceleration of 5m/s2 in a 1 kg mass somewhere in space.How much will the acceleration of a 3kg mass be at the same place?
15 m/s2
10 m/s2
5 m/s2
3 m/s2
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
