Question

please help me to solve this physics question from friction chapter the answer is 2.63 m/s^2 please give full solution please.​

Answer 1

Answer:

Since block slides at 15°,

μ = tan 15° = 0.267

According to the FBD,

$ma=mg sin\theta-\mu mgcos\theta$

Take angle of inclination, 30°

$a= g[0.5+0.267\sqrt{3/4} ]$

$a= 2.63ms^{-2}$

QED