Consider the following physical situations. For each case, determine the angle between the indicated force (in boldface type) and the displacement ("theta" in the work equation). a. 0 degrees b. 180 degrees c. 90 degrees d. 30 degrees e. 60 degrees A rightward applied force is used to displace a television set to the right. The force of friction acts upon a rightward-moving car to bring it to a stop. A waiter uses an applied force to balance the weight of a tray of plates as he carries the tray across the room. The force of air resistance acts upon a vertically-falling skydiver. The force of friction acts upon a baseball player as he slides into third base. An applied force is used by a freshman to lift a World Civilization book to the top shelf of his locker. A bucket of water is tied to a string and tension supplies the centripetal force to keep it moving in a circle at constant speed. An applied force acting at 30-degrees to the horizontal is used to displace an object to the right. A group of football players use an applied force to push a sled across the grass. The tension in the elevator cable causes the elevator to rise at a constant speed. In a physics lab, an applied force is exerted parallel to a plane inclined at 30-degrees in order to displace a cart up the incline. An applied force is exerted upwards and rightwards at an angle of 30-degrees to the vertical in order to displace an object to the right. A child rests on the seat of a swing which is supported by the tension in its cables; he swings from the highest position to its lowest position.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Consider the following physical situations. For each case, determine the angle between the indicated force (in boldface type) and the displacement ("theta" in the work equation).

a. 0 degrees

b. 180 degrees

c. 90 degrees

d. 30 degrees

e. 60 degrees

A rightward applied force is used to displace a television set to the right.
The force of friction acts upon a rightward-moving car to bring it to a stop.
A waiter uses an applied force to balance the weight of a tray of plates as he carries the tray across the room.
The force of air resistance acts upon a vertically-falling skydiver.
The force of friction acts upon a baseball player as he slides into third base.
An applied force is used by a freshman to lift a World Civilization book to the top shelf of his locker.
A bucket of water is tied to a string and tension supplies the centripetal force to keep it moving in a circle at constant speed.
An applied force acting at 30-degrees to the horizontal is used to displace an object to the right.
A group of football players use an applied force to push a sled across the grass.
The tension in the elevator cable causes the elevator to rise at a constant speed.
In a physics lab, an applied force is exerted parallel to a plane inclined at 30-degrees in order to displace a cart up the incline.
An applied force is exerted upwards and rightwards at an angle of 30-degrees to the vertical in order to displace an object to the right.
A child rests on the seat of a swing which is supported by the tension in its cables; he swings from the highest position to its lowest position.

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