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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > In Fig., a hollow tube of mass M is free in horizontal direction. The system is released from rest. There is no friction present. The tube and blocks are taken as system. i. Momentum of the system is conserved in x-direction. ii. Speed of A w.r.t. M= speed of B w.r.t. M. iii. Trajectory of centre of mass is X-constant. iv. Centre of mass has finite acceleration. Evaluate the above statements and choose the correct option from the following:

In Fig., a hollow tube of mass M is free in horizontal direction. The system is released from rest. There is no friction present. The tube and blocks are taken as system. i. Momentum of the system is conserved in x-direction. ii. Speed of A w.r.t. M= speed of B w.r.t. M. iii. Trajectory of centre of mass is X-constant. iv. Centre of mass has finite acceleration. Evaluate the above statements and choose the correct option from the following:

A strip of wood mass M and length l is placed on a smooth horizontal surface. An insect of mass m starts from rest at one end of the strip and walks to the other end in time t In Fig. moving with a constant speed. The speed of the insect as seen from the ground is