6. Intro to Forces (Dynamics)

A simply supported beam of length $L$ carries a uniformly distributed load of intensity $w$ (force per unit length) across its entire span. What is the magnitude of the reaction force at each support?

Which of the following best describes the components that make up a force vector acting on an object on an inclined plane at angle $\theta$ to the horizontal?

In the context of gravitational forces between two masses, at which point is the force of attraction between them the strongest? (Recall that the gravitational force between two masses $m_1$ and $m_2$ separated by a distance $r$ is given by $F=\frac{G}{r}$ where $G$ is the gravitational constant.)

A child of mass $m$ slides down a frictionless slide inclined at an angle $\theta$ to the horizontal. How large is the normal force of the slide on the child?

If a load is applied straight downward at a joint in a truss, how does this affect the forces in the other members of the truss?

$$When a $F$orce is applied to a metal, what happens to the metal $c_{\mathrm{ations}}$ within the structure?

A water nozzle is fixed horizontally and ejects water at a constant speed, creating a jet with mass flow rate $𝜏$ and velocity $v$. If the nozzle is held stationary, what are the correct expressions for the horizontal and vertical forces required to hold the nozzle in place (neglecting gravity and friction)?

Suppose three objects experience the following net forces: Object A: $25 N$, Object B: $-68 N$, Object C: $0 N$. Which object has a net force of $-68 N$?

In the context of forces and kinematics, if a shaft is supported by a smooth thrust bearing at one end, which of the following best describes the type of reaction force provided by the bearing?

A simply supported beam of length $L$ carries a uniformly distributed load of intensity $w$ (force per unit length) along its entire span. What are the reactions at the two supports at the ends of the beam?

A $-1.0\mathrm{nC}$ point charge is placed in an electric field as shown in the figure. If the electric field at the location of the charge is $2.0\times {10}^{5}N/C$ directed to the right, what is the magnitude and direction of the force on the charge?

Which of the following best describes the difference between balanced and unbalanced forces acting on an object?

Which property of a bowling ball most directly affects the number of pins it knocks down when rolled at the same speed as other balls?