A block of mass m is in contact with the cart C as shown in the figure. The coefficient of static friction between the block and the cart is µ . The acceleration α of the cart that will prevent the block from falling statisfies.
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a
b
c
d
answer is C.
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Detailed Solution
n = mafl = µN = µ maFor eqilibrium ,fl ≥ mg⇒ µma ≥ mg⇒ a ≥ g /µ