Questions
The minimum acceleration that must be imparted to the cart in fig., so that the block A will not fall,
given µ is the coefficient between the surfaces of block and cart
detailed solution
Correct option is B
The fictitious force on block A that presses the cart back is given by m a.The upward friction F = µ m aFor block A to be stationary,µ m a=mga = (g/µ).Talk to our academic expert!
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A person just holds a block weighing 2kg between his hands & just keeps it from falling down by pressing it with his hands. If the force exerted by each hand horizontally is 50N, the coefficient of friction between the hand & the block is
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