Problem
How much work does a \( 625 \mathrm{~N} \) (about \( 140 \mathrm{lbs} \) ) person 0 if they can lift \( 50 \mathrm{~N} \) (about \( 11 \mathrm{lbs} \).) barbell \( 2 \mathrm{~m} \) in 4 ?? \( (1005) \)
Solution
Step 1 ：\( W = Fd \)
Step 2 ：\( W = 50 \mathrm{N} \times 2 \mathrm{m} \)
Step 3 ：\( W = 100 \mathrm{J} \)
