Physics - Mechanics - Gravitation - Newton's law of universal gravitation - Gravitation Problems
8 problems. P1: 'Two 50kg people stand 2m apart. Gravitational force = ___ N (use G=6.67×10⁻¹¹)' (8.3×10⁻⁸). P2: 'Earth mass=6×10²⁴kg, radius=6.4×10⁶m. Calculate g at surface = ___ m/s²' (9.8). P3: 'At what height above Earth is g half its surface value? h=___ km (hint: r must be R√2)' (≈2650). P4:
