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Physics
Physics
Problem
A drone propeller pushes air with a force
F
⃗
propeller
→
air
=
5
i
^
+
4
j
^
+
2
k
^
N
\vec{F}_{\text{propeller}\to\text{air}} = 5\hat{i} + 4\hat{j} + 2\hat{k}\,\text{N}
F
propeller
→
air
=
5
i
^
+
4
j
^
+
2
k
^
N
, where
i
^
\hat{i}
i
^
,
j
^
\hat{j}
j
^
and
k
^
\hat{k}
k
^
are mutually perpendicular unit vectors. a. (a) Write the force vector exerted by the air on the propeller. b. (b) Calculate its magnitude.
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