Question

if a box of mass 10kg placed on a surface as shown than what should be expansion in the spring if the pulley is frictionless​

Answer 1

Answer:

ANSWER

By balancing forces on block B

Tension in the string (T)=mg=10x10=100N

Friction force on block A = μmg=0.5x10x10=50N

Net force on block A = T - friction force on block A

                                          =100−50=50N

Acceleration of A = mNet force on blockA

                             = 1050 = 5 m/s2

The system will move with 5 m/s2 of acceleration

Explanation:

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