Question:
2 sphere of mass 64 kg and 30 kg are kept 10 m apart what is the gravitational field intensity for mass body and 30 kg
Answer:
The question seems to be incomplete.
Let us consider the question to be (1) what is the force of attraction between the two masses
By the Newtons law of gravitation, we know F = G M1M2 / R2 we can get F = 6.67 * 10-11 * 64 * 30 / (10)2 = 128.064 * 10-11 N
Alternatively, the question could be (2) At what distance from the 30 Kg mass, the intensity of gravitational force is zero
For this, let us consider the distance from the point at which gravitational force is zero and the 30 kg mass to be x. Then, as both masses are separated by 10m, the other distance between the point of zero gravitational force and the mass of 64 kg would be (10 – x)m
Hence, G * 64 / (10 –x)2 = G * 30 / x2
(64/30 ) x2 = (10 –x)2
Resolving this equation, we can get the value of x.
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