Question

A block of mass 5kg starts to slide down a frictionless plane having an inclination of 25 from rest at the top the length of the incline is 2m find the acceleration

Answer 1

I am not in the office today

Answer 2

Answer:

horizontal components of Fcos65° = ma

i.e sin(90°- 65°)= cos65°

mgcos65° = ma

gcos65° = a

a = 10×0.42

cos 65°=0.42

a= 4.2m/s2