Question

The weight of a person on the moon is about $\frac{1}{6}$ times that on the earth . He can lift a mass of 15 kg on the earth . What will be maximum mass which can be lifted by the same force applied by the person on the moon ?

Answer 1

Since the weight of any person on the moon is about $1/6$ times that on the earth, hence acceleration due to gravity at the moon is $1/6$ of that on earth. This means that by applying the same force a person can lift six times heavier object on the moon than what he could lift on the earth. So, the maximum mass which can be lifted by the same force applied by the person on the moon is $6\times 15kg=90kg$.