6,7 & 8

6) Three blocks A,B and C are suspended as shown in figure.  Mass of each block A and C is m, if system is in equilibrium and mass of B is M then

a)M=2m b) M<2m c) M>2m d) M=m

7) In the arrangement shown in figure pullys are massless and frictionless and threads are light and inextensible. Block of mass m1 will remain at rest if

a) 1/m1=1/m2 + 1/m3 b) 4/m1= 1/m2 + 1/m3 c) m1=m2+m3 d) 1/m3= 2/m2 + 3/m1

8) A uniform rope of length L and mass M is placed on a smooth fixed wedge as shown. Both end of rope are at same horizontal level. The rope is initially released from rest, then the magnitude of initial acceleration is

 

Answers (3)

The answer to question  number 6 is explained below:

The answer to question  number 8 is explained below:

The answer to question  number 8 is explained below:

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