Question

A wooden block weighing 500N is juat pulled up the plane having an inclination of 30 degree with the horizxontal by a pull parallel to the plane if the cofficent of friction is 0.25 find the pull PLEASE SOLVE THIS QUESTION BECAUSE TOMMOROW I HAVE EXAM OF PHYSICS ​

Answer 1

Explanation:

I took the speed as a constant speed

$f = ma \\ f - 500 \sin(30) - fr = 50 \times 0 \\ f - 500 \frac{1}{2} - 0.25 \times 500 \cos(30) = 0 \\ f - 250 - 0.25 \times 250 \sqrt{3} = 0 \\ f - 250 - 108.25 =0 \\ f - 358.25 = 0 \\ f = 358.25$

$fr = co efficient \: \times r$

Answer 2

Answer:

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