Apiece of modern sculpture consists of an 8.0-m-long, 150 kg stainless steel bar passing diametrically through a 40 kg copper sphere. the center of the sphere is 2.0 m from one end of the bar. to be mounted for display, the bar is oriented vertically, with the copper sphere at the lower end, then tilted 35∘ from vertical and held in place by one horizontal steel cable attached to the bar 2.0 m from the top end. what is the tension in the cable?

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.