PROBLEMSRotational Motion(Show all work on a separate sheet)1. A meter stick is balanced on a support at its center. A 0.70-N weight is hung on the meter sticka distance of 0.25 m to the left of the center. Where should you place the a 0.40-N weight sothat the meter stick is in static equilibrium?2. Look at Sample Problem #5 on the Handout. Solve the Problem with the length of thesee-saw changed to 12 ft. Keep all other data.3. What is the length of the lever arm that must be used if a torque of 72.5 m.N isrequired, and the largest force that can be exerted is 145 N?4. A child attempts to use a wrench to remove a nut on a bicycle. Removing the nutrequires a torque of 10 m.N. The maximum force that the child is capable of exertingat a 90 angle is 50 N. What is the length of the wrench that the child must use toremove the nut?5. You have a 0.234-m wrench. A job requires a torque of 32.4 m.N, and you can exert aforce of 232 N. What is the smallest angle, with respect to the horizontal, at which theforce can be exerted?6. A car moves a distance of 420 m. Each tire on the car has a diameter of 42 cm. Howmany revolutions does each tire make as they move that distance?7. A thin hoop with a mass of 5.0 kg rotates about a perpendicular axis through itscenter. A force of 25 N is exerted tangentially to the hoop. If the hoop's radius is2.0 m, what is it's angular acceleration?8. In the spin cycle of a clothes washer, the drum turns at 635 rpm. If the lid of thewasher is opened, the motor is turned off. If the drum requires 8.0 s to slow to a stop,what is the angular acceleration of the drum?

Since you have asked multiple questions, we will solve the first question for you. If you want any…

1. A meter stick is balanced on a support at its center. A 0.70-N weight is hung on the meter stick a distance of 0.25 m to the left of the center. Where should you place the a 0.40-N weight so that the meter stick is in static equilibrium?

1. A meter stick is balanced on a support at its center. A 0.70-N weight is hung on the meter stick a distance of 0.25 m to the left of the center. Where should you place the a 0.40-N weight so that the meter stick is in static equilibrium?

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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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Question

PROBLEMS
Rotational Motion
(Show all work on a separate sheet)
1. A meter stick is balanced on a support at its center. A 0.70-N weight is hung on the meter stick
a distance of 0.25 m to the left of the center. Where should you place the a 0.40-N weight so
that the meter stick is in static equilibrium?
2. Look at Sample Problem #5 on the Handout. Solve the Problem with the length of the
see-saw changed to 12 ft. Keep all other data.
3. What is the length of the lever arm that must be used if a torque of 72.5 m.N is
required, and the largest force that can be exerted is 145 N?
4. A child attempts to use a wrench to remove a nut on a bicycle. Removing the nut
requires a torque of 10 m.N. The maximum force that the child is capable of exerting
at a 90 angle is 50 N. What is the length of the wrench that the child must use to
remove the nut?
5. You have a 0.234-m wrench. A job requires a torque of 32.4 m.N, and you can exert a
force of 232 N. What is the smallest angle, with respect to the horizontal, at which the
force can be exerted?
6. A car moves a distance of 420 m. Each tire on the car has a diameter of 42 cm. How
many revolutions does each tire make as they move that distance?
7. A thin hoop with a mass of 5.0 kg rotates about a perpendicular axis through its
center. A force of 25 N is exerted tangentially to the hoop. If the hoop's radius is
2.0 m, what is it's angular acceleration?
8. In the spin cycle of a clothes washer, the drum turns at 635 rpm. If the lid of the
washer is opened, the motor is turned off. If the drum requires 8.0 s to slow to a stop,
what is the angular acceleration of the drum?

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