Physics-
General
Easy
Question
The system is pushed by a force F as shown in figure. All surfaces are smooth except between B and C. Friction coefficient between B and C is 
Minimum value of F to prevent block B from downward slipping is
The correct answer is:
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?
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A large mass M hangs stationary at the end of a light string that passes through a smooth fixed tube to a small mass m that moves around in horizontal circular path. If l is the length of the string from m to the top end of the tube and is angle between this part and vertical part of the string as shown in the fig, then time taken by m to complete one circle is equal to
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The colour of the above complex is
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chemistry-General
