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block of mass 35 kg
resting on a table. The table is so rough that
it offers a self adjusting resistive force 10%
of the weight of the block for its sliding
motion along the table. A 20 kg wt load is
attached to the block and is passed over a
pulley to hang freely on the left side. On the
right side there is a 2 kg wt pan attached to
the block and hung freely. Weights of 1 kg
wt each, can be added to the pan. Minimum
how many and maximum how many such
weights can be added into the pan so that
the block does not slide along the table?
[Ans: Min 15, maximum 21].
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