Question

A spring balance $A$ and a beam balance $B$ are used to weigh the same object at a place on the equator and a place on the pole of the earth. Then

• A. Readings of A and B will be different at both the places
• B. Readings of A will be different but those of B will be same at both the places
• C. Readings of A will be same but those of B will be different at both the places
• D. Readings of both A and B are same at both the places

Answer 1

Answer: (B)

Readings of A will be different but those of B will be same at both the places

Answer 2

Spring balance measures spring force hence readings of A will be different as g at equator is smaller than g at pole. Beam balance measures torque hence B will be affected equally due to variation of g at two places. So readings of B will be same.