Change the chapter
Question
A contestant in a winter sporting event pushes a 45.0-kg block of ice across a frozen lake as shown in Figure 5.23(a). (a) Calculate the minimum force F he must exert to get the block moving. (b) What is the magnitude of its acceleration once it starts to move, if that force is maintained?
Question Image
<b>Figure 5.23</b> A person (a) pushing, and (b) pulling, a block of ice across ice.
Figure 5.23 A person (a) pushing, and (b) pulling, a block of ice across ice.
Question by OpenStax is licensed under CC BY 4.0.
Final Answer
  1. $50\textrm{ N}$
  2. $0.7 \textrm{ m/s}^2$
Solution Video

OpenStax College Physics Solution, Chapter 5, Problem 18 (Problems & Exercises) (6:56)

Sign up to view this solution video!

View sample solution

Calculator Screenshots

OpenStax College Physics, Chapter 5, Problem 18 (PE) calculator screenshot 1