H2P-528

Field strength of a point mass

H2 Physics · JC 2 · Hard · Field strength of a point mass

Two point masses, 2.0 kg and 3.0 kg, are separated by 0.40 m in space. What is the gravitational field strength at a point midway between them, due only to these two masses? Take the gravitational constant as

G = 6.67 \times 10^{-11}\,\text{N m}^2\,\text{kg}^{-2}

1.66 × 10⁻⁹ N kg⁻¹ towards the 3.0 kg mass
1.66 × 10⁻⁹ N kg⁻¹ towards the 2.0 kg mass
8.34 × 10⁻⁹ N kg⁻¹ towards the 3.0 kg mass
3.34 × 10⁻⁹ N kg⁻¹ towards the 2.0 kg mass

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