Question

Which of the following activities does not involve the turning effect of a force?
(A) Opening a can with a can opener
(B) Lifting a car with a car jack
(C) Loosening a nut with a spanner
(D) Sawing a piece of wood
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Answer 1

Answer:

Loosening a nut with a spanner

Explanation:

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Answer 2

Answer:(c) loosening a nut with a spanner  

Explanation:

A force may cause an object to turn about a pivot. The turning effect of a force is called the moment of the force. Moments act about a pivot in a clockwise or anticlockwise direction

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