Question #dfa0b
2 Answers
The correct answers are d and f.
The moment or torque is
The arm is
Explanation:
The torque (or moment of force, angular force) is given by the formula
where
This means the value of torque is
where
Extend the line of
This is equivalent to placing brackets like this
The segment labeled "y cm" is called arm. Its length is
The torque is clockwise for reasons obvious to me (The force is pulling right side down, so it will move down) (d)
Alternative method
Break
Parallel component
This is equivalent to placing brackets like this
One more method
If all values are known, we can just calculate
I agree with Voyager1: d and f.
Explanation:
I have one more method for calculating torque to add to the discussion.
Referring to my Physics book (by Resnick Halliday), the formula for Torque uses a vector cross product. To explain the vector cross product for the general case, my book says:
where
When it discussed torque, my book defines it as
Plugging in the data
I hope this helps,
Steve