Question

A block of mass m can slide on a fixed smooth inclined plane of inclination e kept on the floor of a lift. The lift is descending with retardation ao. If m= 2 kg, g = 10 m/s?, 20 = 8 m/s2 and 0 = 60° then the contact force by incline on the block, in S.I. units, is Answer:​

Answer 1

May this helps you if i am correct

Answer 2

i don't know this answer