V1=12.56 м/с ΔL=0.2 м V2=1.5*V1 v=?
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ω=V1/R1=V2/R2
R2=R1+ΔL
V1/R1=1.5*V1/(R1+ΔL)
R1=ΔL/0.5=0.2/0.5=0.4 м
V1=2*π*v*R1
v=V1/(2*π*R1)=12.56/(2*3.14*0.4)=5 Гц
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Q=cmΔt
Δt=Q/cm
Δt=31,68*10⁶/880*<span>1200</span>=31,68/1,056=30°C
F1/a1=F2/a2 a2=a1*F2/F1=2*54/18=6 м/с2