A body of mass 1kg is moving in the upward
direction with an acceleration of 2m/s?. Calculate
the work done by tension in first second. (at t=0,
u=0)
20
AT
T-mgma
19 +10
1kg 112m/s?
2.0
Answers
Answered by
0
Explanation:
Applying Newton's second law of motion, acceleration,
a
=
m
F
=2t
i
^
+3t
2
j
^
Acceleration is defined as rate of change of velocity,
a
=
dt
d
v
v
=∫
0
t
a
dt
v
=∫
0
t
(2t
i
^
+3t
2
j
^
)dt
v
=t
2
i
^
+t
3
j
^
Power, P=
F
.
v
=(2t
i
^
+3t
2
j
^
).(t
2
i
^
+t
3
j
^
)
P=(2t
3
+3t
5
) W
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