7. Friction, Inclines, Systems

In the context of constructing an inclined plane, what is the name of the joint formed when two pieces of metal overlap one another?

When walking up an inclined plane at constant speed, what is the magnitude of the resistive force (such as friction or applied force) that must be overcome to move upward, assuming the plane makes an angle $\theta$ with the horizontal and the mass of the object is $m$?

A block of mass $m$ slides down a frictionless inclined plane that makes an angle $\theta$ with the horizontal. What is the acceleration of the block down the incline?

What was the greatest discovery by Galileo during his inclined-plane experiments?

If an object of weight $w$ rests on a frictionless inclined plane, how will $w$ change if the angle of the ramp to the horizontal is increased?

While driving up a steep incline, what action should you take to maintain a constant $v$?

A $3500$ kg truck is parked on a $7.0°$ slope. What is the magnitude of the friction force acting on the truck? (Assume the truck is at rest and neglect air resistance. Use $g=9.8$ m/s$2^{\mathrm{}}$.)

A $4000\mathrm{kg}$ truck is parked on a $7.0°$ incline. What is the magnitude of the friction force acting on the truck?

If the coefficient of static friction between a car's tires and the road is $\mu s_{}$, what is the maximum angle $\theta$ of an inclined plane (hill) on which you can park the car without it sliding down?

A car is skidding to a stop while moving down a hill inclined at $20°$. Which of the following best describes the direction of the friction force acting on the car during the skid?

As a block slides down a frictionless incline, which of the following statements is true about its acceleration?

A driver needs to move a $3000lb$ load down a ramp with a $15\%$ grade. What is the component of the load's weight acting parallel to the ramp? (Assume $g=32.2\mathrm{ft}/s^2$ and neglect friction.)

When a ball is placed on an inclined plane that is raised to a vertical position, what is the magnitude of its acceleration (neglecting air resistance)?

Consider the system shown in Fig. 4–68 with m_A = 8.2kg and m_B = 11.5kg. The angles θ_A = 59° and θ_B = 32°. In the absence of friction, what force $\overrightarrow{F}$ would be required to pull the masses at a constant velocity up the fixed inclines?