6. Intro to Forces (Dynamics)

When all $F$ acting on an object in two dimensions are balanced, what state is the object in?

In the context of equilibrium in $2D$, in which of the following conditions does the car not accelerate?

A horizontal beam weighing $190N$ has its center of gravity at its midpoint. If the beam is supported at both ends and is in static equilibrium, what is the magnitude of the upward force exerted by each support?

A uniform horizontal beam is in static equilibrium and supported at two points. If the flexural rigidity $EI$ is constant along the length of the beam, which of the following statements about the internal bending moment at the midpoint of the beam is correct?

Which term best describes the forces acting on an object when the net force is $0$?

When balanced forces act on an object that is at rest, what will happen to the object?

Under what condition are the four forces acting on an airplane (lift, weight, thrust, and drag) in equilibrium?

In the context of equilibrium in 2D, which of the following best describes the condition for an object to be in a state of balance or motionless?

In a two-dimensional equilibrium problem, if the walls are fixed to the ground, what type of reaction force can the walls exert on an object in contact with them?

Which of the following is true when two vectors sum to $0$ in two-dimensional equilibrium?

Which of the following objects is in equilibrium in two dimensions?

Which of the following free-body diagrams represents a box in equilibrium in two dimensions?

Which of the following best describes a body in equilibrium in two dimensions?

Which type of equilibrium is observed when a ball is placed at the bottom of a hemispherical bowl?

A chandelier is supported from the ceiling by 2 chains. Both chains make a 30° angle with the vertical. The tension in each chain is the same because of symmetry:T₁=T₂=50 N. What is the mass of the chandelier?