Question

1. Draw the following free-body diagrams. Label the forces with their appropriate symbol, and includethe magnitude of each force if it is known.a) A basketball player shoots the ball,and it is flying through the air toward the basket.(Ignore air resistance.)b) A wheeled cart on a track (similar to whatyou used in the lab) weighs 0.5 N. It is pulledto the right with an applied force of 0.25 N, andexperiences rolling friction of 0.03 N. Ignore airresistance.c) A cart is on an air track (a frictionlesssurface similar to an air hocket table). Mrs. Hountonpushes the cart, and then lets go. It is travelingtoward the left. Include air resistance. The free-bodydiagram should be for the situation after Mrs. Hountonlets go of the cart.

Answer 1

To draw a free-body diagram, identify all the forces acting on an object and draw them including their magnitude and direction. Use a point to represent the object.

a)

While the ball is flying through the air, the only force acting on the ball is its weight (due to gravitational attraction to the Earth).

b)

There are three forces acting on the cart: its weight, the pull to the right and the rolling friction to the left:

c)

There are three forces acting on the cart: The gravitational pull downwards, the push upwards of the air that compensates the weight, and the air resistance to the right (since the cart is traveling toward the left).