When a body moves with a constant speed along
a circle
(a) no work is done on it
(b) no acceleration is produced in the body
(c) no force acts on the body
(d) its velocity remains constant
Answers
Answered by
5
Answer:
The total work done on the object is indeed
0
.
Explanation:
If an object is moving with a constant velocity, then by definition it has zero acceleration.
And according to Newton's second law,
∑
F
=
m
a
∑
F
=
m
(
0
)
=
0
So there is no net force acting on the object.
The simple equation for total work is
W
tot
=
∑
F
⋅
s
Since the net force
∑
F
is
0
,
W
tot
=
0
⋅
s
=
¯¯¯¯¯¯¯¯¯¯¯¯¯
∣
∣
0
∣
∣
−−−−−−−
The total work done on the object is thus
0
(that's not to say that there isn't work done by individual forces on the object, but the sum is
0
).
Answered by
0
Answer:
When a body moves with a constant speed in a circle?
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