# Mechanical Engineering Objective Questions { Engineering Mechanics }

106. The total friction that can be developed is

107. A man wishes to slide a heavy block over a concrete floor by a rope. At what angle (α) the rope should be inclined with the horizontal so that the man has to exert minimum force to pull it,

108. A body of weight W is resting at a plane inclined at 30° to the horizontal. If it is attached to a string making an angle of 60° with horizontal, find the tension in the string, if the friction angle is 30°

109. A body is resting on a plane inclined at angle of 30° to horizontal. What force would be required to slide it down, if the coefficient of friction between body and plane is 0.3

110. Least force that starts a body along a plane acts at an angle with the plane

111. A body weighing 100 kg falls vertically down on a cart weighing 200 kg moving at velocity V m/sec. The velocity of cart after falling of weight would be

112. A weight of 500 kg is held on a smooth plane, inclined at 30° to the horizontal by a force P acting 30° above the plane. The reaction of plane on the weight will be

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