Tuesday
March 31, 2015

Homework Help: physics

Posted by tanya on Saturday, December 10, 2011 at 12:34pm.

A model airplane of mass 0.7 kg is attached
to a horizontal string and flies in a horizontal
circle of radius 5.6 m, making 1.6 revolutions
every 7 s. (The weight of the plane is balanced
by the upward “lift” force of the air on the
wings of the plane.)
The accelaration due to the gravity is 9.81
m/s2.
Find the speed of the plane

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