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Which statement about a couple is not true? A It must consist of coplanar forces - AQA - A-Level Physics - Question 12 - 2019 - Paper 1
Question 12
Which statement about a couple is not true? A It must consist of coplanar forces. B It can produce rotational motion. C It can produce translational motion. D It ha... show full transcript
Worked Solution & Example Answer:Which statement about a couple is not true? A It must consist of coplanar forces - AQA - A-Level Physics - Question 12 - 2019 - Paper 1
Step 1
Identify the Incorrect Statement
Answer
To determine which statement about a couple is not true, we need to analyze each option:
- A: A couple consists of two equal and opposite forces acting on different lines of action. They must indeed be coplanar forces. Hence, this statement is true.
- B: A couple does produce rotational motion due to the torque generated by its forces. Therefore, this statement is also true.
- C: A couple does not produce translational motion; rather, it results in a rotation about a certain axis. This statement is not true.
- D: The moment of a couple is measured in Newton-meters (N m), which is a correct statement.
Thus, the statement which is not true is C.