A model airplane of mass 1.5 kg is attached
to a horizontal string and flies in a horizontal
circle of radius 5.8 m, making 2 revolutions
every 8 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/s
2
.
Find the speed of the plane.
1 answer
speed=distance/time=2PI*5.8/4sec m/s
1 answer