

MCQOPTIONS
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1. |
A box is placed on three different surfaces "a marble floor, a cardboard sheet, and a sandpaper. The minimum forces required to simply move the box on the surfaces are \[{{F}_{m}},{{F}_{c}},\] and \[{{F}_{s}}\] respectively. The three forces can be arranged in the decreasing order as |
A. | \[{{F}_{c}}<{{F}_{m}}<{{F}_{s}}\] |
B. | \[{{F}_{c}}<{{F}_{s}}<{{F}_{m}}\] |
C. | \[{{F}_{m}}<{{F}_{c}}<{{F}_{s}}\] |
D. | \[{{F}_{s}}<{{F}_{c}}<{{F}_{s}}\] |
Answer» D. \[{{F}_{s}}<{{F}_{c}}<{{F}_{s}}\] | |