Strength of Materials A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if the floor is rough, the wall is smooth the floor is smooth, the wall is rough the floor and wall both are smooth surfaces the floor and wall both are rough sur-faces the floor is rough, the wall is smooth the floor is smooth, the wall is rough the floor and wall both are smooth surfaces the floor and wall both are rough sur-faces ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Pick up wrong statement about friction force for dry surfaces. Friction force is proportional to velocity of sliding dependent on the materials of contact surface proportional to normal load between the surfaces independent of the area of contact surfaces proportional to velocity of sliding dependent on the materials of contact surface proportional to normal load between the surfaces independent of the area of contact surfaces ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Tangent of angle of friction is equal to limiting friction angle of repose coefficient of friction kinetic friction limiting friction angle of repose coefficient of friction kinetic friction ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The effort required to lift a load W on a screw jack with helix angle a and angle of friction<="" div=""> Wtan(a-<)>) Wsin(a + <(>) Wcos(a + ) Wtan(a + <)>) Wtan(a-<)>) Wsin(a + <(>) Wcos(a + ) Wtan(a + <)>) ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials When trying to turn a key into a lock, following is applied couple coplanar force moment non-coplanar forces couple coplanar force moment non-coplanar forces ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Which of the following is not the unit of work, energy and heat ? kWhr hp kg m kcal kWhr hp kg m kcal ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS