Gravity

Step 1: Concept
Acceleration due to gravity at depth is .
Step 2: Analysis
Weight on surface ( ) = N. Depth ( ) = (half way down).
Step 3: Calculation
. Weight at depth ( ) = N.
Step 4: Conclusion
Hence, the body weighs 125 N.
Final Answer:(B)

Weight is the force due to gravity, calculated using the formula:
The object's weight on the Moon is less because gravity on the Moon is th of Earth's gravity.
Step 1: Given weight on Earth = 60 N
This means: Step 2: On the Moon, gravity is reduced to :
So, the object would weigh 10 N on the Moon.