Chapter 4, Problem 20P

a)

To determine

To draw the free body diagram of basketball player just before leaving the ground on a jump.

Answer to Problem 20P

Solution:

  

Explanation of Solution

Given:

Force applied by the player on the ground, $F$

Normal Force, N

Weight of the player, W

• To jump up player applies force in thedownward direction.
• Normal force acts in the upward direction.
• Weight acts in the downward direction.

Free body diagram:

  

(b)

To determine

To draw the free body diagram of player when a person is in the air.

Answer to Problem 20P

Solution:

  

Explanation of Solution

Given:

Weight of the player, W

• The normal force is 0 as there is no contact between player and the ground.

Free body diagram: