A 2 kg apple is at rest on the floor at the bottom of a staircase. How much work would be necessary to bring that apple up to th
2 answers:
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Answer:
Answer
given,
length of bar = 80 cm
mass of the bar = 10 kg
smaller mass = 4 kg
distance = 20 cm
taking moment about B
difference between two scale = 8 - 6
= 2 N