Most Important Selected Qs for JEE AdvancedPhysicsLaws of Motion
Paragraph: In the shown figure m_A, m_B and m_C are the masses of the three blocks, the incline is frictionless m_A=5 ~kg , m_B=10 ~kg , m_C=2 ~kg . coefficient of friction between A and B is 0.5 and between B and C is 0.1 ( . Take g =10 ~m / s ^2 ) On the basis of above data answer the following questions. Question: What is the frictional force on block A
Options
- A30 N
- B48 N
- C18 N
- D78 N
Correct answer
A. 30 N
Step-by-step solution
m_ A g =5 10 37^ =5 10 3 5 =30 ~N f_ = _ AB ( m _ C + m _ B ) g =48 ~N hence f=30 ~N