A. 686N
B. 595N
C. 581N
D. 105N
Correct Answer:
Option D – 105N
Explanation
Wt loss = mg – m (g – a)
= 70 x 10 – 70 (10 – 1.5) = 105N
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![A spring balance, which is suspended from the roof of a lift, carries a mass of 1kg at its free end. If the lift accelerates upwards at 2.5ms‾², determine the reading on the spring balance. [g = 10ms‾²]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A spring balance, which is suspended from the roof of a lift, carries a mass of 1kg at its free end. If the lift accelerates upwards at 2.5ms‾², determine the reading on the spring balance. [g = 10ms‾²]")