800kg herical Problems. (Take g = 10m/sand G = 6.67 * 10-11 Nm² kg 2 if required) A sphere of mass 40 kg is attracted by another sphere of mass 15 kg with a force of 9.8 x 10-7 N. Find the value of the universal gravitational constant if the centres of spheres are 20 cm apart.​

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