Find the torque of a force ˆ ˆ ˆ F 3i j 5k acting at the point ˆ ˆ ˆ r 7i 3j k
Answers
Answered by
1
Explanation:
Answer
Correct option is
B
14
i
∧
+32
j
∧
+2
k
∧
Given,
r
=−7
i
^
+3
j
^
+
k
^
F
=−3
i
^
+
j
^
+5
k
^
Torque,
τ
=
r
×
F
τ
=14
i
^
+32
j
^
+2
k
^
Answered by
1
Answer:
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Explanation:
=
r
×
F
=(7
i
^
+3
j
^
+
k
^
)(−3
i
^
+
j
^
+5
k
^
)
τ
=
∣
∣
∣
∣
∣
∣
∣
∣
i
^
7
−3
j
^
3
1
k
^
1
5
∣
∣
∣
∣
∣
∣
∣
∣
=14
i
^
−38
j
^
+16
k
^
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