Sand is being dropped on a conveyer belt at the rate of 
. The force necessary to keep the belt moving with a constant velocity of 
will be
A
newton
B
zero
C
Mv newton
D
2 Mv newton
Text Solution
Verified by ExpertsThe correct answer is:
C
: 
As 
is a constant,
. But 
To keep the conveyer belt moving at 
force needed 
newton.
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