Question

A force of 3kg wt is just sufficient to pull a block of 4 kg over a flat surface calculate the angle of friction

Answer 1

Hello Dear,

◆ Answer -

θ = 36.87°

◆ Explanation -

Normal reaction due to block is given by -

N = m.g

N = 4g

Load required to move the bkock is -

F = m'.g

F = 3g

For angle of friction θ,

tanθ = F / N

tanθ = 3g / 4g

tanθ = 3/4

Taking arctan,

θ = arctan(3/4)

θ = 36.87°

Therefore, angle of friction is 36.87° .

Thanks dear. Hope this helps you...