 # Mechanical Engineering Questions And Answers :: Engineering Mechanics: part3 Mechanical Engineering : Engineering Mechanics QUESTIONS AND ANSWERS :: part3 : 11 to 15

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2021 and IES 2021 examinations :

 11.80. A particle moves along a straight line such that distance (x) traversed in t seconds is given by x = t2 (t - 4), the acceleration of the particle will be given by the equation 3t2-lt 3t2+2t 6f-8 6f-4 6t2-8t. ANSWER : : 6f-8 Explanation :
 12.79. A body of weight W on inclined plane of a being pulled up by a horizontal force P will be on the point of motion up the plane when P is equal to W W sin (a + \$) Wtan(a + <|)) W\an(a-) Wtana. ANSWER : : Wtan(a + <|)) Explanation :
 13.93. Kinetic friction is the tangent of angle between normal reac-tion and the resultant of normal reac-tion and the limiting friction ratio of limiting friction and normal reaction the friction force acting when the body is just about to move the friction force acting when the body is in motion dynamic friction. ANSWER : : the friction force acting when the body is in motion Explanation :
 14.86. A projectile is fired at an angle 9 to the vertical. Its horizontal range will be maximum when 9 is 0� 30� 45� 60� 90�. ANSWER : : 45� Explanation :
 15.72. Which one of the following statements is not correct the tangent of the angle of friction is equal to coefficient of friction the angle of repose is equal to angle of friction the tangent of the angle of repose is equal to coefficient of friction the sine of the angle of repose is equal to coefficient to friction none of the above. ANSWER : : the sine of the angle of repose is equal to coefficient to friction Explanation :

More Engineering Mechanics QUESTIONS AND ANSWERS available in next pages

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