Question

An alien from another system has a weight of 1024 N when he is on his home planet where g = 16.5 m/s2. What is his weight on Earth? 

Answer 1

The weight

$$W=mg$$

Hence,

$$W_{\rm Earth}=W_P\times \frac{g_{\rm Earth}}{g_P}\\ =1024\:\rm N\times \frac{9.8\:\rm m/s^2}{16.5\:\rm m/s^2}=608\:\rm N$$