Normal Force: Solution

In Brief

This page includes solutions to the set of questions related to Normal Force.
This helps learners to ensure their learning on aspects of physics in general but also how to find the work done by the horizontal component of a force.
It is strongly recommended to do the practice quiz before looking at the provided answers.

Question:

A force of 60 N is used to drag a sled 5 m across the ground.
The force is directed at an angle upward from the sled as shown in figure.
What is the work done by the horizontal component of the force?
  1. 180 J
  2. 200 J
  3. 190 J
  4. 20 J
  5. 0 J

Solution:

The horizontal component of force is 40 N and is in the direction of motion.
W = F × d = (40 N) ×(5m) = 200 J.


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