5009.8 kg\dfrac{500}{9.8} \mathrm{~kg}9.8500 kg
2509.8 kg\dfrac{250}{9.8} \mathrm{~kg}9.8250 kg
2009.8 kg \dfrac{200}{9.8} \mathrm{~kg}9.8200 kg
4509.8 kg\dfrac{450}{9.8} \mathrm{~kg}9.8450 kg