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Please help me with this physics problem

R

RecklaZ

Senior member
An athlete whose mass is 93.0kg is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a barbell that weighs 500N . He lifts the barbell a distance of 0.700m in a time of 2.10s .

Use Newton's laws to find the total force that his feet exert on the ground as he lifts the barbell. Take free fall acceleration to be 9.80m/s^2 .


The answer is 1430 N

please show me how to get the answer.
 
No when I tried what the other thread said. The numbers didnt add up to the answer.


So i started a new thread. Please help me.
 
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