A boy whose mass is 75 kg holds in his hands a bag weighing 40 N. With what force does the floor push up on his feet ? (Take g=9.8 m/s²⁾

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Solution

Force excreted by the floor on the feet is the total force which is required hold the boy on the floor, which is equal to the weight of the boy and bag.
total weight of boy and bag is (75×9.8)+40 N
=735+40=775 N

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A boy whose mass is 75 kg holds in his hands a bag weighing 40 N. With what force does the floor push up on his feet ? (Take g=9.8 m/s2)

Force excreted by the floor on the feet is the total force which is required hold the boy on the floor, which is equal to the weight of the boy and bag. total weight of boy and bag is (75×9.8)+40 N =735+40=775 N

A boy whose mass is 75 kg holds in his hands a bag weighing 40 N. With what force does the floor push up on his feet ? (Take g=9.8 m/s²⁾

Force excreted by the floor on the feet is the total force which is required hold the boy on the floor, which is equal to the weight of the boy and bag.
total weight of boy and bag is (75×9.8)+40 N
=735+40=775 N