Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

Hang a pen by a piece of string.

1.Is the pen at rest or in motion, explain.
2.are there forces acting of the pen?explain.

cut the string with a pair of scissors
3.what happens to the pen?what could have caused the pen's motion?explain.

place a book on the top of a table
4.is the book at rest, or in motion?explain.
5.are there forces acting on the book?explain.


1. No, the pen is at rest, it doesn't move.
2. Yes, tension force applied by the string and gravitational force of the earth.
3. The pen definitely falls down, because the gravitational force is acting on it.
4. The book is at rest, it doesn't move.
5. Yes, normal force is applied by the table and the gravitational force of the earth.
17 4 17
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts