fatt52

Verified answer

L=10 м    h=5 м    t=4 c     μ=?
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sinα=h/L=5/10=0.5
cosα=√(L²-h²)/L=0.87
L=a*t²/2
a=g*(sinα-μ*cosα)
μ=(sinα - 2*L/(t²*g))/cosα=(0.5 - 2*10/(16*10))/0.87=0.43
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