Unit 3-4 Review

Is this object in equilibrium?

What's happening in this FBD?

Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator moving upward but braking?

Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator accelerating upward?

Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator at rest?

A 2-kilogram block slides down a 30° incline as shown above with an acceleration of 2 meters per second squared.

Which of the following diagrams best represents the gravitational force W, the frictional force f, and the normal force N that act on the block?

Is it possible for the object in the diagram to be moving to the right and have this FBD?

When the frictionless system shown above is accelerated by an applied force of magnitude F, the tension in the string between the blocks is

A forward force of 15 N is counteracted by a backwards frictional force of 6 N. The mass of the object is 2 kg. what is the acceleration?

A force of 8 Newton’s is applied to a crate so that it moves at a constant velocity of 1.5 m/s. What is the net force?

Two people are pulling on the ends of a rope. Each person pulls with a force of 100 N. The tension in the rope is

At point P, he car hits an area of ice and loses all frictional force on it tires. Which path does the car follow on the ice?

An object moving is moving with uniform speed in a horizontal counterclockwise circle. At the location depicted, the centripetal force stops. Which path will the object follow?

An object is moving with uniform speed in a horizontal, counterclockwise circle. At location B, which way does the acceleration vector point?

At the instant shown in the diagram, the car's centripetal acceleration is directed-

A curved groove is place on the top of a level table as shown in the diagram. A ball is pushed in the groove at P so that it leaves at Q. Which picture shows how the ball will move when it leaves the groove at Q?

A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?

The diagram below represents a 2.0-kilogram toy car moving at a constant speed of 3.0 meters per second counterclockwise in a circular path with a radius of 2.0 meters. At the instant shown in the diagram, the centripetal force acting on the car is --

What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of radius 0.3 m?

A car going around a curve - identify the centripetal force:

A race car completes three laps of a circular track with a radius of 35 m with a speed of 25 m/s. Determine the centripetal acceleration of the car.