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
Strength of Materials A number of forces acting at a point will be in equilibrium if All of them are inclined equally Their total sum is zero Sum of resolved parts in any two perpendicular directions are both zero Two resolved parts in two directions at right angles are equal All of them are inclined equally Their total sum is zero Sum of resolved parts in any two perpendicular directions are both zero Two resolved parts in two directions at right angles are equal ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Center of percussion is the point of C.G. the point of metacentre point of suspension the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis the point of C.G. the point of metacentre point of suspension the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60° produce resultant of Vl3 kg. These forces are 3 and 1 kg 2 and 5 V5 and V5 2 and V6 3 and 1 kg 2 and 5 V5 and V5 2 and V6 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 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 along the plane horizontally ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Forces are called coplanar when all of them acting on body lie in one plane perpendicular planes one point different planes one plane perpendicular planes one point different planes ANSWER DOWNLOAD EXAMIANS APP
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