Two bodies of masses 
and 
are acted upon by a constant force 
for a time 
. They start from rest and acquire kinetic energies 
and 
respectively. Then 
is
Text Solution
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: The acceleration of the body of mass 
acts upon by a constant 
is
The acceleration of the body of mass 
acts upon by a same constant 
is
Starting from rest, the velocity acquired by mass 
in time 
is
Starting from rest, the velocity acquired by mass 
in the same time 
is
Divide (iii) by (iv), we get
Kinetic energy of mass 
is
Kinetic energy of mass 
is
Divide (vi) by (vii), we get
(Using (v))
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