The weight of a body on earth is 98 N where the acceleration due to gravity is 9.8 m s-2. What will be it’s (a) mass and (b) weight on moon where the acceleration due to gravity is 1.6 m s-2 ?

w = 98 N

g = 9.8 m s^-2

Weight (W) = m × g

⇒ 98 = m × 9.8

⇒ m = 98/9.8 = 10 kg

Hence, the mass of the body = 10 kg.

(b) As mass is constant and it’s value remains the same on the moon (m) as on earth (e), hence,

m_e = m_m = 10 kg

g_moon = 1.6 m s^-2

Substituting the values in the formula above, we get,

Weight = 10 × 1.6 = 16

Hence, the weight on the moon = 16 N.