Complete each balance formula

Exercise and reference answers

Missing parts

1. Answer

   theta

   Choices

   1. theta
   2. r
   3. F

2. Answer

   r perp

   Choices

   1. r
   2. r perp
   3. F

3. Answer

   tau

   Choices

   1. F
   2. W
   3. tau

Complete the statement

Torque from a force: tau = r F sin {0}. Perpendicular lever arm: r perp = r sin theta, so tau = {1} F. Balanced turning: net {2} = 0.

Instructions

Tap the symbol that fills each blank.

Explanation