MCQOPTIONS
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| 1. |
Which of the following is INCORRECT in the laws of dry friction? |
| A. | The magnitude of the limiting friction bears a constant ratio to the normal reaction between the two contacting surfaces |
| B. | The force of friction is dependent of the area of contact between the two surfaces |
| C. | The frictional force always acts in a direction opposite to that in which the body tends to move |
| D. | The force of friction depends upon the roughness/smoothness of the surfaces |
| Answer» C. The frictional force always acts in a direction opposite to that in which the body tends to move | |