1-A 3000 Kg object is lowered by a cable with an acceleration of 1.000m/s2. What is the tension in the cable?
2-The force exerted on the tires of a car to directly accelerate it along the road is exerted by the...?
3-A paraglider is flying horizontally at a constant speed. Assume that only two forces act on it in the vertical direction,its weight and a vertical lift force exerted on its wings by the air . The lift force has a magnitude of 1800 N. If the lift force should suddenly decrease to 1200 N, what would be the vertical acceleration of the glider? Take the upward direction to be the +y direction.
4-A rock of mass 45kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistahce that opposes its downward motion is 18 N. What is the magnitude of the acceleration of the rock?
5-A 71-kg man stands on a bathroom scale in an elevator. What does the scale read if the elvator is ascending with an acceleration of 3.0m/s2?