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A person carries a load of 50kg on his head. What force does he need to lift the load??clc |
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Answer» Hello dear when a person load 50 kg load on his head means there is no work done hence, we say that work done is 0 . Given,Mass= 50kg Force= ? We know that, F= m×a F= 50 × 9.8 (Since acceleration due to gravity on earth is 9.8 m/s²) F = 490 N Given, m = 50 kg g = 9.8 m/s2 The force does he need to lift the load. F = mg F = 50 x 9.8 F = 490 N The person will need to apply this amount of force, in opposite direction. |
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