Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
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Textbook Question
Chapter 11, Problem 53A
The rock has a mass of 1 kg. What is the mass of the measuring stick if it is balanced by a support force at the one-quarter mark?
Expert Solution & Answer
To determine
To calculate: The mass of the measuring stick.
Answer to Problem 53A
The mass of the measuring stick if it is balanced by a support force at the one-quarter mark is 1kg.
Explanation of Solution
Introduction:
The point of an object of a system of objects to which the weighted relative positions are totally zero is considered as the center of mass. Under the influences of an external force, the center of mass describes the overall motion of the system.
Consider the figure shown below.
The rock that located at the one-quarter of its length to the left and stick’s weight which is at the center of mass, one-quarter of its length to the right, balances the stick. Thus, the mass of the stick should be 1kg to balances the rock.
Conclusion:
Thus, the mass of the measuring stick is 1kg.
Chapter 11 Solutions
Conceptual Physics: The High School Physics Program
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Ch. 11 - Prob. 11ACh. 11 - How far can an object be tipped before it topples...Ch. 11 - In terms of center of gravity, support base, and...Ch. 11 - Prob. 14ACh. 11 - Distinguish between unstable, stable, and neutral...Ch. 11 - Is the gravitational potential energy more, less,...Ch. 11 - Prob. 17ACh. 11 - What accounts for the stability of the Space...Ch. 11 - Prob. 19ACh. 11 - You hold a meterstick with the same suspended...Ch. 11 - In a physics lab you find four different...Ch. 11 - Perky (left) and Sneezlee fright) have the same...Ch. 11 - When Suzie gradually increases the angle of the...Ch. 11 - Three people stand with their backs against a...Ch. 11 - a. Calculate the individual torques produced by...Ch. 11 - Which is better for prying open a stuck cover from...Ch. 11 - The spool is pulled in three ways, as shown below....Ch. 11 - If you know your own weight and have seesaw and a...Ch. 11 - Is the net torque changed when a partner on a...Ch. 11 - You cannot stand with your heels and back to the...Ch. 11 - Explain why a long pole is more beneficial to a...Ch. 11 - When a bowling ball leaves your hand it may not...Ch. 11 - Using the ideas of torque and center of gravity,...Ch. 11 - How do you throw a football so that it spins about...Ch. 11 - When you pedal a bicycle, maximum torque is...Ch. 11 - To balance automobile wheels, particularly when...Ch. 11 - Why does a washing machine vibrate violently if...Ch. 11 - A bottle rack that seems to defy common sense is...Ch. 11 - Which glass in the figure is unstable and will...Ch. 11 - Prob. 40ACh. 11 - How can the three bricks in the figure be stacked...Ch. 11 - Why is the middle seating most comfortable in a...Ch. 11 - Prob. 43ACh. 11 - Why is it easier to carry the same amount of water...Ch. 11 - A long track balanced like a seesaw supports a...Ch. 11 - How does a heavy tail enable a monkey standing on...Ch. 11 - Where is the center of mass of Earths atmosphere?Ch. 11 - As of 2007 more than 225 planets outside our solar...Ch. 11 - To tighten a bolt, you push with a force of 80 N...Ch. 11 - The diagram below shows a ruler balanced with the...Ch. 11 - The diagram below shows a ruler balanced with the...Ch. 11 - The diagram below shows a ruler balanced with the...Ch. 11 - The rock has a mass of 1 kg. What is the mass of...Ch. 11 - Suspend a belt from a piece of stiff wire that is...Ch. 11 - Hang a hammer on a loose ruler as shown. Then...
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