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A spring balance can measure force because:
Assertion (A): A spring balance can be used to find the weight of a bag of vegetables. Reason (R): The SI unit of force is the newton.
A packet is hung from a spring balance as shown in the figure. Find the mass of the packet in grams. (Take g = 10\ \text{m/s}^2.)
A spring balance reads 12 N when a stone hangs from it in air. When the stone is fully dipped in water (still hanging), the reading falls to 7.5 N. (a) Find the buoyant force on the stone in newton. (b) Would the reading be more or less than 7.5 N if the stone were dipped in salty water? Enter the answer to (a).
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