Consider an elliptically shaped rail 
in the vertical plane with 
and 
. A block of mass 1 kg is pulled along the rail from 
to 
with a force of 18 N, which is always parallel to line 
(see figure). Assuming no frictional losses, the kinetic energy of the block when it reaches 
is (Take, acceleration due to gravity 
)
Text Solution
Verified by ExpertsThe correct answer is:
C
From work-energy theorem,
Work done by all forces = Change in kinetic energy or
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