A girl weighing 400 N climbs a vertical ladder. If the value of g be 10 m s-²,the work done by her after climbing 2 m will be : a) 200 J b) 800J c) 8000J d) 2000J correct answer is (B).Can you explain this answer?

Answers

Arvi Choudhary
Dec 31, 2018
W(weight )=mg
400N=m*10
so m will be 40 kg
then as we know W=fs
W=mgh
W=40*10*2
so W=800joules..... ANSWER..

W(weight )=mg 400N=m*10so m will be 40 kg then as we know W=fsW=mgh W=40*10*2so W=800joules..... ANSWER..
W(weight )=mg 400N=m*10so m will be 40 kg then as we know W=fsW=mgh W=40*10*2so W=800joules..... ANSWER..