### Minimum Force Required to Slide a Body on Horizontal Plane

Minimum Force Required to Slide a Body on a Rough Horizontal Plane

Let a body A of weight W is resting on a rough horizontal plane B, as shown in Fig. 1.19. Let an effort P is applied at an angle Î¸ to the horizontal, such that the body just begins to move. From Fig. 1.19, we find that

For P to be minimum, cos (Î¸ - Ï•) should be maximum, i.e.

cos (Î¸-Ï•)=1 or Î¸-Ï•=0 or Î¸=0

In other words, the effort P is minimum when its inclination (Î¸) with the horizontal is equal to the angle of friction (Ï•).

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### Are Engineers Favourite Among Girls?

What do girls think about men who are engineers and what type of engineers are most favourite among girls? A survey was conducted by a team of aboutmech with members chosen from different countries. Each team member carried out a neutral survey in his/ her country to evaluate what females think about most of the engineers from different engineering branches. An overview of different questions asked in survey is given below: Question: Which male engineers do you find more attractive as a husband? Almost 50% women voted for mechanical engineers to be the most attractive husbands among other engineers. So mechanical engineers are most favourite among girls as a husband. They find them more trustworthy, intelligent, and creative. A married women from California said, “If your husband is a mechanical engineer, he will help you in everyday tasks. Because mechanical engineers are good team players and they have creative ideas about everything.” Which male engineers do you find more