A sphere of mass 50kg is attached by a second sphere of mass 90kg with a force equal to a weight of 0.5mg and their centres are 20cm apart. The gravitational constant is.
4.2×10−11Nm2kg2
4.4×10−11Nm2kg2
3.3×10−11Nm2kg2
6.23×10−15Nm2kg2
A
4.2×10−11Nm2kg2
B
4.4×10−11Nm2kg2
C
6.23×10−15Nm2kg2
D
3.3×10−11Nm2kg2
Open in App
Solution
Verified by Toppr
F=Gm1m2r2
F=0.5×10−6(9.8)N
.5×10−6(9.8)=G(50)(90)(0.22)
⟹G=4.4×10−11Nm2kg2
Was this answer helpful?
0
Similar Questions
Q1
A sphere of mass 50kg is attached by a second sphere of mass 90kg with a force equal to a weight of 0.5mg and their centres are 20cm apart. The gravitational constant is.
View Solution
Q2
The value of gravitational constant, G is
View Solution
Q3
Find the gravitational attraction between the two atoms in a hydrogen molecule. Given that G=6.67×10−11Nm2kg2, mass of a hydrogen atom =1.67×10−27 kg and distance between the two atoms =1oA.
View Solution
Q4
Solve: A sphere of mass 10 kg is attracted by another sphere of mass 150 kg, with a force equal to 1.28×10−6N, when their centers are separated by a distance of 0.28 m. Calculate the gravitational constant.
View Solution
Q5
Two spherical balls of mass 10kg each are placed with their centres 10cm apart. Find the gravitational force of attraction between them.