FREE Trial
Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Sally sits on a see-saw 1 m from the axis of rotation. Her dad pulls downward on the other side 2.5 m from the axis,

Sally sits on a see-saw 1 m from the axis of rotation. Her dad pulls downward on the other side 2.5 m from the axis, but this see-saw is rusty and only 80% efficient. How much force must he apply if Sally has a mass of 15 kg. Neglect the mass of the see-saw.

Step by Step Solution

★★★★★

3.43 Rating (150 Votes )

There are 3 Steps involved in it

Step: 1

In order to determine the force required to balance Sally on the opposite side of th... blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Physics

Physics

Authors: James S. Walker

5th edition

978-0133498493, 9780321909107, 133498492, 0321909100, 978-0321976444

More Books

Students also viewed these Physics questions

Question

★★★★★
A coin is placed 11.0cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 36 rpm is...

Answered: 1 week ago

Question

★★★★★
A coin is placed 13.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 38.0 rpm...

Answered: 1 week ago

Question

★★★★★
The rectangular plate shown has a mass of 15 kg and is held in the position shown by hinges A and B and cable EF. Assuming that the hinge at B does not exert any axial thrust, determine (a) The...

Answered: 1 week ago

Question

★★★★★
For the manipulator shown, find the twist coordinates f; at zero con- figuration and 9st (0) using the product of exponentials approach. Use the base and tool frames shown. (b) (10 points) Find efi0i...

Answered: 1 week ago

Question

★★★★★
Identify the TRUCK tables candidate key(s).

Answered: 1 week ago

Question

★★★★★
The employees of Wilson Lumber are allowed to take five sick days per year. The sick days vest and are paid at the current rate of $ 150 per day. Wilson employs 70 employees. Employees took 80% of...

Answered: 1 week ago

Question

★★★★★
=+6. For the Gas prices: a) Find a 2-point moving average of the first year.

Answered: 1 week ago

Question

★★★★★
Mendoza Corporation was organized on January 1, 2014. It is authorized to issue 20,000 shares of 6%, $40 par value preferred stock, and 500,000 shares of no-par common stock with a stated value of $2...

Answered: 1 week ago

Question

★★★★★
Q1. Convert the following statements to First Order Logic sentences: Hint: If you want to answer the questions on this document, you may copy and use the symbols in this set { , , , , , , } 1. All...

Answered: 1 week ago

Question

★★★★★
Fly-by-Night is an international airline company. Its fleet includes Boeing 757s, 747s, 727s, Lockheed L-1011s, and McDonnell Douglas MD-83s, MD-80s, and DC-9s. Assume that Fly-by-Night made the...

Answered: 1 week ago

Question

★★★★★
Page. Reporter: Court Reporter: Court:

Answered: 1 week ago

Question

★★★★★
PLEASE ANSWER PROBLEM 3. IT HAS 15 QUESTIONS Introduction to Cost Accounting and Cost Accounting Cycle 7. Utility costs were incurred in the factory, P450,000. 8. Advertising costs paid, P2,250,000....

Answered: 1 week ago

Question

★★★★★
Identifies process strategies most useful for a window manufacture by using the tools of process analysis. Then Identify recent advances in production technology that would be useful in the window...

Answered: 1 week ago

Question

★★★★★
Mini-Case B (7 marks) Like every Canadian couple, Amira and Owen carry quite a lot of debt. . Three years ago, Amira purchased a Subaru Outback costing $34,750 before sales tax of 15%, with a $5,000...

Answered: 1 week ago

Question

★★★★★
1. Use the experimental data below to produce a graph that effectively conveys the information. 2. Answer the questions below. Number of kinds of colonies Number of kinds of colonies Test subject...

Answered: 1 week ago

Question

★★★★★
Amesbury Construction assembles residential houses. It uses a job-costing system with two direct-cost categories (direct materials and direct labor) and one indirect-cost pool (assembly support)....

Answered: 1 week ago

Question

★★★★★
Suppose we observe the following rates: 1R1= .10, 1R2= .16, and E (2r1) = .10. If the liquidity premium theory of the term structure of interest rates holds, what is the liquidity premium for year 2?

Answered: 1 week ago

Question

★★★★★
Apply Jacobis method to the given system. Take the zero vector as the initial approximation and work with four-significant-digit accuracy until two successive iterates agree within 0.001 in each...

Answered: 1 week ago

Question

★★★★★
Geologists have learned of periods in the past when the Strait of Gibraltar closed off, and the Mediterranean Sea dried out and become a desert. Later, when the strait reopened, a massive saltwater...

Answered: 1 week ago

Question

★★★★★
If you view a clock in a mirror, as in FIGURE 26-60, do the hands rotate clockwise or counterclockwise? In figure 26-60

Answered: 1 week ago

Question

★★★★★
An ultraviolet photon is absorbed by a fluorescent molecule, which then emits two photons. (a) Are the wavelengths of the emitted photons longer than, shorter than, or the same as the wavelength of...

Answered: 1 week ago

Question

★★★★★
Referring to Exercise 18-15, suppose the process remained in control for the next 40 hours. The thickness measurements for hours 41 through 43 are as follows: Hour 41 0.764 0.737 0.724 0.716 0.752...

Answered: 1 week ago

Question

★★★★★
Data were collected on a quantitative measure with a subgroup size of five observations. Thirty subgroups were collected, with the following results: x 44.52 R5.6 a. Determine the Shewhart factors...

Answered: 1 week ago

Question

★★★★★
Philip Crosby wrote the book Quality Is Free. In it he argues that it is possible to have high quality and low price. Do you agree? Provide examples that support your position. Business Applications

Answered: 1 week ago

Previous Question Next Question