Help me :(

[lean stone]

I'm thinking of finding y to x and then take the derivative of both sides but seems like that doesn't work

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[hallow moth]

@lean stone is the total length of the rope BP + AP = 15 m?

[lean stone]

yes

[hallow moth]

i solved it

[lean stone]

can you please explain it

[hallow moth]

AP + BP = 15m

now find AP and BP using pythagorean theorem

using 4m, x and y

show me ur work

[hallow moth]

of course

[lean stone]

i have tried solving it but i got stuck at the crate A moves at a speed of 5m/s

[hallow moth]

show me ur solution

[lean stone]

i haven't came up with one

i just have x = 3, y = 2sqrt(21)

[hallow moth]

you have the relation between x and y then

[lean stone]

it's really long like

[hallow moth]

show me it

[lean stone]

15 = sqrt( x^2 + 16 ) + sqrt( y^2 + 16 )
y = sqrt{ [ 15 - sqrt( x^2 + 16 ) ]^2 - 16}

[hallow moth]

work with first one

now differentiate the entire equation with respect to time @lean stone

[lean stone]

i've checked the derivative

it's like this

[lean stone]

i tried substitute 0,5 m/s directly into the equation but it didn't gave me an answer

[hallow moth]

bc that's the equation of position

@lean stone you need to work with the first equation that you wrote bc that's easier

differentiate with respect to time not x