1. m = 51kg
g = 10m/s²
F = m × g
F = 51kg×10m/s²
F = 510N
2. m = 2g = 0,02kg
g = 10m/s²
F= m × g
F = 0,02kg × 10m/s²
F = 0,2N
3. m = 400g = 4kg
g = 10m/s²
F = m × g
F = 4kg × 10m/s²
F = 40N
4. m = 0,25kg
g = 10m/s²
F = m × g
F = 0,25kg × 10m/s²
F = 2,5N