7. Friction, Inclines, Systems

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)?