A man (mass 50 kg) and his son (mass = 20 kg) are standing on a frictionless surface facing each other. The man pushes his son so that he starts moving at a speed of 0.70 ms1 with respect to the man. The speed of the man with respect to the surface is

Question:

Options :

(a) 0.20 ms-1
(b) 0.14 ms-1
(c) 0.47 ms-1
(d) 0.28 ms-1

Answer :

(a) 0.20 ms-1

Answer Steps :

step 1:

step 2:

step 3:

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Four particles each of mass m are placed at the corners of a square of side length l. The radius of gyration of the system about an axis perpendicular to the square and passing through its centre is [EAMCET (Med.) 2000]

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Four particles each of mass m are placed at the corners of a square of side length l. The radius of gyration of the system about an axis perpendicular to the square and passing through its centre is [EAMCET (Med.) 2000]

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