A system of copianar forces is in equilibrium when___________________?

Byadmin January 18, 2019June 4, 2021

A system of copianar forces is in equilibrium when___________________?

A. force polygon closes
B. funicular polygon closes
C. both force polygon” and funicular polygon close(Correct)
D. all the forces are concurrent

Applied Mechanics and Graphic Statics

The member forces in a statically in determinate truss____________________?

The member forces in a statically in determinate truss____________________?

A. can be obtained by graphic statics
B. cannot be obtained by graphic statics(Correct)
C. may be obtained by graphic statics
D. can be obtained by graphic statics by trial and error

Read More The member forces in a statically in determinate truss____________________?
Applied Mechanics and Graphic Statics

If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is__________________?

If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is__________________?

A. zero
B. maximum✔
C. minimum
D. unpredictable

Read More If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is__________________?
Applied Mechanics and Graphic Statics

In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is_____________________?

In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is_____________________?

A. 30
B. 50(Correct)
C. 60
D. 80

Read More In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is_____________________?
Applied Mechanics and Graphic Statics

A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec, . The work required to stop the hoop is______________?

A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec, . The work required to stop the hoop is______________?

A. 2 J
B. 4 J
C. 6 J
D. 8 J

Read More A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec, . The work required to stop the hoop is______________?
Applied Mechanics and Graphic Statics

The condilion for a lifting machine to be reversible is that its efficiency should be_________________?

The condilion for a lifting machine to be reversible is that its efficiency should be_________________?

A. less than 50%
B. more than 50%
C. more than 66.67%
D. equal to 100%

Read More The condilion for a lifting machine to be reversible is that its efficiency should be_________________?
Applied Mechanics and Graphic Statics

A cube on a smooth horizontal surface___________________?

A cube on a smooth horizontal surface___________________?

A. cannot be in stable equilibrium
B. cannot be in neutral equilibrium
C. cannot be in unstable equilibrium
D. can be in any of these states

Read More A cube on a smooth horizontal surface___________________?

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