To prevent damage to floors (and to increase friction), a crutch will often have a rubber tip
Question:
To prevent damage to floors (and to increase friction), a crutch will often have a rubber tip attached to its end. If the end of the crutch is a circle of radius 0.95 cm without the tip, and the tip is a circle of radius 2.0 cm, by what factor does the tip reduce the pressure exerted by the crutch?
Step by Step Answer:
Picture the Problem When walking with crutches a person supports a large portion of ...View the full answer
Related Video
The area of a circle is given by the formula: A = ?r^2 Where A is the area, ? is a mathematical constant (approximately 3.14), and r is the radius of the circle. The radius is the distance from the center of the circle to the edge. So for example, if the radius of a circle is 5 units, the area would be: A = ?(5^2) = ?(25) = 78.5 square units Here three friends went out to a restaurant and decided to have pizza for lunch. While they were waiting for their order, one of them stepped out to take a call but promised to return in two minutes. The waiter came and presented them with the menu, and they decided to order two 10-inch pepperoni pizzas. The waiter took their order and left. Just then, the third friend returned and asked what they had ordered. They explained that they had ordered two small pepperoni pizzas as they were only three of them and it would be enough for them. However, the third friend suggested that for the same price, they could get a large pizza that would be much bigger than the two small ones. He asked the waiter for a pen and paper and proceeded to calculate the area of the two small pizzas and compared it to the area of one large pizza. The friends were amazed at how the circle measurements worked and decided to change their order from two small pizzas to one large pizza.
Students also viewed these Mechanics questions
-
To prevent damage from arcing in an electric motor, a discharge resistor is sometimes placed in parallel with the armature. If the motor is suddenly unplugged while running, this resistor limits the...
-
Pancake collapse of a tall building. In the section of a tall building shown in Figure a, the infrastructure of any given floor K must support the weight W of all higher floors. Normally the...
-
A hollow, spherical shell with mass 2.00 kg rolls without slipping down a 38.0 slope. (a) Find the acceleration, the friction force, and the minimum coefficient of friction needed 10 prevent...
-
Julio sold his corporation to a competitor, Exeter LLC, for $100,000,000. Julio incorporated his business 17 years ago by investing $500,000 plus his proprietary know-how. There have been no other...
-
The magnitude characteristic of a band-elimination filter is shown in figure. Determine H(jw) O dB -20 dB/dec +20 dB/dec 10 100 1000 10,000 w (rad/s)
-
Wash Company sells washing machines. On January 1, 2019, it had 20 units in inventory, valued at $400 per unit. During 2019, it sold 200 units at $700 per machine. Wash Company purchased 190 units...
-
How do the engine nacelles and fuselage affect aircraft stability?
-
Consider a pressure surge system to reduce the effect of pressure variations at a compressor outlet on the pressure in a compressed gas header. We want to develop a two-tank model and evaluate the...
-
determine the superficial gas velocity VSG at each transition using the correlations provided Water superficial velocity (m/s) Water density (kg/m) Gas density (kg/m) Fluid's properties [0.001-10]...
-
Use the Modified Euler method to approximate the solutions to each of the following initial-value problems, and compare the results to the actual values. a. y' = ety, 0 t 1, y(0) = 1, with h = 0.5;...
-
A person floats in a boat in a small backyard swimming pool. Inside the boat with the person are several blocks of wood. Suppose the person now throws the blocks of wood into the pool, where they...
-
The three identical containers in FIGURE 15-46 are open to the air and filled with water to the same level. A block of wood floats in container A; an identical block of wood floats in container B,...
-
Target Corporation prepares its financial statements according to U.S. GAAP. Targets financial statements and disclosure notes for the year ended February 3, 2018, are available in Connect. This...
-
What are the elements of malicious prosecution? a. Which is the most difficult element to prove, and why? b. Why are prosecutors and police officers rarely sued for this tort?
-
True Or False Puffing is an actionable form of misrepresentation.
-
Under misrepresentation a defendant is liable a. even if the plaintiffs reliance did not occur in the type of transaction the defendant could reasonably expect the plaintiff to engage in as a result...
-
What is the doctrine of caveat emptor?
-
True Or False A plaintiff may be able to recover if a defendant expresses an opinion implying that no facts incompatible with that opinion exist.
-
The press release Men Need to Man Up, According to Ball Park Brand Survey (PR Newswire, October 14, 2015) describes the results of a study in which 1012 U.S. men were asked a number of questions...
-
The senior management at Davis Watercraft would like to determine if it is possible to improve firm profitability by changing their existing product mix. Currently, the product mix is determined by...
-
Show that in the limit T >> 0 the heat capacity of a solid goes towards the limit C v 3Nk B , in conventional units. To obtain higher accuracy when T is only moderately larger than 0, the heat...
-
Consider a dielectric solid with a Debye temperature equal to 100 K and with 1022 atoms cm-3. Estimate the temperature at which the photon contribution to the heat capacity would be equal to the...
-
Consider a solid of N atoms in the temperature region in which the Debye T3 law is valid. The solid is in thermal contact with a heat reservoir. Use the results on energy fluctuations from Chapter 3...
-
There are 42 locations throughout the northeast region with deposits totaling $3.2bil. If you were Kiamarie's vice president, how would you expect her to choose between Gagne's Nine Events of...
-
Why is succession planning essential in an organization? 2. What is the need for succession planning? 3. What do you think are the challenges to succession planning? 4. How can employees contribute...
-
Two activities/obligations/responsibilities that might be added to an updated version of the job description for an HR professional: How would you go about monitoring changes in laws and regulatory...
Study smarter with the SolutionInn App