A 4.4-cm c m -diameter, 24 g g plastic ball is attached to a 1.2-m m -long string and swung in a vertical circle. The balls speed is 6.7 m/s m / s at the point where it is moving straight up. find the magnitude of the net force on the ball. air resistance is not negligible.

48.97N

Explanation:

The magnitude of the net force on the string is expressed as

F = mv²/r

m is the mas of the object = 24 g = 0.024kg

v is the velocity = 6.7m/s

r is the radius = diameter/2 = 4.4/2

radius r = 2.2cm = 0.022m

Substitute the given values into the formula;

F =  0.024(6.7)²/0.022

F = 0.024(44.89)/0.022

F = 1.07736/0.022

F = 48.97N

Hence the magnitude of the net force on the ball is 48.97N

a coal burning power plant

d) physical means can be used to separate the components of air.