Quiz 1 - LU 5 Static

When a particle is in equilibrium, the sum of forces acting on it equals

• a constant

• zero

• a positive number

• a negative number

A particle is in equilibrium state when it is at _________ if originally at rest or has a constant __________ if originally in motion.

• motion, acceleration

• kinetic, velocity

• rest, velocity

• acceleration, kinetic

The followings are the condition of equilibrium for particles except:

• Total force x - axis = 0

• Resultant force = 0

• Total force y - axis = 0

• Velocity = 0

A combination of all the forces acting on the object is...

• Inertia

• Force

• Net force

• Newton

Which one is balanced?

• top

• both

• bottom

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.

• They will not move at all.

• The boy in red will win.

• Both will fall down.

What is the net force?

• 5000 N right

• 40 N left

• 4000 N right

• 4000 N left

Calculate the net force acting upon the object.

• 10 N north

• 10 N south

• 20 N south

• 22.4 N north