The mcb of rupa's room is tripped and keeps on tripping again and again . if it is a domestic circuit, what could be the reason
1 answer:
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Answer:
The work done by the frictional force is 600J.
Explanation:
The work done by the frictional force is
.
Now, and
; therefore,
Hence, the work done by friction is 660J.
Answer:
The change of the momentum of the ball is
Explanation:
We should find (1)with
the initial momentum and
the final momentum. Linear momentum is defined as
, using that on (1):
(2)
It's important to note that momentum and velocity are vectors and direction matters, so if +x direction is the direction towards the wall and the -x direction away the wall and
so (2) becomes: