a labourer whose own mass is 50 kg carries an addditinal load of60 kg on his head to the top of the building15m high find the total work done by him I'd he carriersanother addditional block of masss 10 kg to the height ( g =10m\s)
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Explanation:
Given A labourer whose own mass is 50 kg carries an additional load of 60 kg on his head to the top of the building 15 m high find the total work done by him I'd he carriers another additional block of mass 10 kg to the height ( g =10 m\s ^2)
- Given mass = 60 + 50
- = 110 kg
- So g = 10 m/s^2
- We know that F = ma
- = 110 x 10
- = 1100 N
- Also W = F x s
- = 1100 x 15
- = 16,500 J
- Now according to question
- Mass = 60 + 50 + 10
- = 120 kg
- Also g = 10 m/s^2
- F = m x a
- = 120 x 10
- = 1200 N
- Also W = F x s
- = 1200 x 15
- = 18,000 J
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