Physics - SHM Question with Solution | TestHub
Answer the following by appropriately matching the lists based on the information given in the paragraph.
A block P of mass m is placed on smooth horizontal surface. Another block Q of same mass is placed on the block P and block Q is connected to the spring as shown in the diagram. The two blocks are pulled by a distance A and released. The blocks oscillates without slipping on each other. Then match the matrix.
List - I | List - II |
|---|---|
(P) Towards right | (1) Friction force on P when both blocks are at equilibrium position & moving right. |
(Q) Towards left | (2) Friction force on Q when both the blocks are at equilibrium position & moving left. |
(R) Zero | (3) Friction force on P when both the blocks are at right extreme position. |
(S) Maximum | (4) Friction force on Q when both the blocks are at left extreme position. |
| (5) Spring force on Q when the blocks are moving & on left side of equilibrium position. |
Options:
Answer:
Solution:
At equilibrium position acceleration is zero, so friction on both blocks is zero. R 1,2
On the left of equilibrium the spring is stretched and pulls Q right. P 5
At the extremes the spring force is maximum, so friction is maximum: S 3,4
Friction on P at right extreme and on Q at left extreme both act left: Q 3,4
Answer: D
