Question
Three bricks each of length L and mass M are arranged as shown from the wall. The distance of the centre of mass of the system from the wall is
BITSAT
Physics
Center of Mass Momentum and Collision
2021
BITSAT 2021
BITSAT Physics Question (2021) — Solution
Options
- A. L 4
- B. L 2
- C. ( 3 2 ) L
- D. ( 11 12 ) L
Answer
D. ( 11 12 ) L
Step-by-step solution
x_ 1 = L 2 , x_ 2 = L , x_ 3 = 5 ~L 4 x_ CM = m_ 1 x_ 1 +m_ 2 x_ 2 +m_ 3 x_ 3 m_ 1 +m_ 2 +m_ 3 = M L 2 + M L + M 5 ~L 4 M + M + M = 11 ~L 12
Related: Physics — Center of Mass Momentum and Collision · All PYQ Banks