Question

plz solve my first question of physics
of 50 points ​

Answer 1

$\huge\boxed{ANSWER:-}$

CORRECT ANSWER IS OPTION D

➡️Draw FBD of two blocks

➡️ assuming that blocks moves with common acceleration

ac = 10/4+6 = 10/10= 1m/s²

➡️draw FBD of block b (on which external force is not applied )

➡️ Required frictional force

f = Mb × ac = 6× 1 = 6N

since, limiting friction (maximum available static friction)= 0.2×4×10 =8N

NOTE:- If ac (common acceleration) is ≤ a max then,

aA=aB=aCommon

Required frictional force is less then limiting friction hence, both blocks willove together with common acceleration.

Answer 2

Answer:

Answer:

Please refer to this attachment

{ANSWER:-}

CORRECT ANSWER IS OPTION D

➡️Draw FBD of two blocks

➡️ assuming that blocks moves with common accelerationac = 10/4+6 = 10/10= 1m/s²

➡️draw FBD of block b (on which external force is not applied )

➡️ Required frictional forcef = Mb × ac = 6× 1 = 6Nsince, limiting friction (maximum available static friction)= 0.2×4×10 =8N

then,aA=aB=aCommonRequired frictional force is less then limiting friction hence, both blocks willove together with common acceleration.