Verified Solution • 2025–26 Session
moderate
QNEET-2020-Ph-703: NEET 2020 Physics - Class 11 NEET-2020-Ph-703 Solution: Two particles of mass 5 kg and 10 kg respectively are attached…
Two particles of mass 5 kg and 10 kg respectively are attached to the two ends of a rigid rod of length 1 m with negligible mass. The centre of mass of the system from the 5 kg particle is nearly at a distance of: 50 cm 67 cm 80 cm 33 cm
Multiple Choice Options
- A 50 cm
- B 67 cm
- C 80 cm
- D 33 cm
Step-by-Step Verified Solution
Let's assume both the particles are lying on X-axis.
Let the 5 kg particle is at the origin.
Then the X-coordinate of the centre of mass of the system is,
x c m = m 1 x 1 + m 2 x 2 m 1 + m 2
= 5 _ 0 + 100 _ 10 5 + 10
= 66.66 cm _ 67 cm