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Author Question: If the net force on an object is zero, does the net torque on the object also have to be zero? ... (Read 22 times)

leo leo

  • Hero Member
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  • Posts: 566
on: Jul 29, 2018
If the net force on an object is zero, does the net torque on the object also have to be zero?
 
  What will be an ideal response?

Question 2

What is the longest wavelength of light that can cause photoelectron emission from a metal that has a work function of 2.20 eV?
 
  A)
 
  417 nm
  B)
 
  257 nm
  C)
 
  344 nm
  D)
 
  564 nm
  E)
 
  610 nm


zenzy

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  • Posts: 336
Reply #1 on: Jul 29, 2018
Answer to Question 1

No. For example, the object might be subjected to two equal and opposite forces that are not along the same straight line. This would produce a torque, but the net force would be zero.

Answer to Question 2

D


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