A weighing machine is kept in a lift accelerating upward at 5 m s⁻². A block on the machine is also attached to a spring balance above. At the shown instant the weighing machine and spring balance read 15 kg-wt and 45 kg-wt respectively. Take g=10 m s⁻².
Physics · Newtons law of motion and Friction · spring balcnce and weighting machine related problem
A weighing machine is kept in a lift accelerating upward at 5 m s⁻². A block on the machine is also attached to a spring balance above. At the shown instant the weighing machine and spring balance read 15 kg-wt and 45 kg-wt respectively. Take g=10 m s⁻².
Sub-question 1
The mass of the block and the normal force from the weighing machine are:
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Sub-question 2
If the lift is stopped and equilibrium is reached, the readings of the weighing machine and spring balance become:
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Sub-question 3
Find the lift acceleration for which the weighing machine shows the true weight of the block.
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