AP EAMCET201726 Apr 2017Morning ShiftPhysicsLaws of MotionActual
Two situations are shown in fig. (a) and (b). In each case, m₁=3 ~kg and m₂=4 ~kg . If a₁, a₂ are the respective accelerations of the blocks in these situations, then the values of a₁ and a₂ are respectively [ g=10 ~ms ⁻² ]
Options
- A20 7 ~ms ⁻², 10 7 ~ms ⁻²
- B10 7 ~ms ⁻², 25 7 ~ms ⁻²
- C40 7 ~ms ⁻², 10 7 ~ms ⁻²
- D30 7 ~ms ⁻², 5 7 ~ms ⁻²
Correct answer
C. 40 7 ~ms ⁻², 10 7 ~ms ⁻²
Step-by-step solution
From (i) &(i i) , we get a₁= m₂ g m₁+m₂ as m₁=3 ~kg , m₂=4 ~kg a₁= 4 10 3+4 = 40 7 ~m / s ^2 For fig. (b) a= ( m₂-m₁ (m₁+m₂ ) ) g= 10 7 ~m / s ^2