When weighed on a balance at the top of a cliff 30 m high, weight of an object of mass 0.5 kg is different than that weighted near the foot of the cliff. Calculate the change in weight. Take,
Radius of the earth = 6,400 km

Explanation

To solve the problem of calculating the change in weight of an object when weighed at the top of a 30 m high cliff compared to its weight at the foot of the cliff, we can follow these steps:

### Step 1: Understand the Concept of Weight
Weight (W) of an object is given by the formula:
\[ W = m \cdot g \]
where \( m \) is the mass of the object and \( g \) is the acceleration due to gravity.
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