Strength of Materials A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if the floor and wall both are rough sur-faces the floor and wall both are smooth surfaces the floor is rough, the wall is smooth the floor is smooth, the wall is rough the floor and wall both are rough sur-faces the floor and wall both are smooth surfaces the floor is rough, the wall is smooth the floor is smooth, the wall is rough ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials In ideal machines mechanical advantage is less than velocity ratio mechanical advantage is unity mechanical advantage is equal to velocity ratio mechanical advantage is greater than velocity ratio mechanical advantage is less than velocity ratio mechanical advantage is unity mechanical advantage is equal to velocity ratio mechanical advantage is greater than velocity ratio ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of kinematic friction limiting friction repose friction kinematic friction limiting friction repose friction ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction along the plane horizontally vertically at an angle equal to the angle of friction to the inclined plane along the plane horizontally vertically at an angle equal to the angle of friction to the inclined plane ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Two non-collinear parallel equal forces acting in opposite direction constitute a couple constitute a moment constitute a moment of couple balance each other constitute a couple constitute a moment constitute a moment of couple balance each other ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The resultant of the following three couples 20 kg force, 0.5 m arm, + ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be 20 kg, + ve sense 10 kg, – ve sense 20 kg, – ve sense 10 kg, + ve sense 20 kg, + ve sense 10 kg, – ve sense 20 kg, – ve sense 10 kg, + ve sense ANSWER DOWNLOAD EXAMIANS APP
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