Question

Sa se afle alungirea unui corp cu rigiditatea de 100 kN/m la remorcarea unui automobil de 2 tone cu acceleratia de 0.5m/s2

Answer 1

F=m*a=2000*0.5=1000N=1kN

F=k*l, l=F/k=1/100=0.01m=10cm

Answer 2

k=100 kN/m=100000 N/m

m=2 t=2000 kg

F=ma=2000•0,5=1000 N

F=kx=>x=F/k=1000/100000=1/100=0,01 m=1 cm