A brick slides down an inclined plank at constant speed when the plank is inclined at an
Question:
A brick slides down an inclined plank at constant speed when the plank is inclined at an angle θ0. If the angle is increased to θ1, the block accelerates down the plank with acceleration a. The coefficient of kinetic friction is the same in both cases. Given θ0 and θ1, calculate a.
Step by Step Answer:
The freebody diagram is the same as for the precedin...View the full answer
Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
Related Video
Static friction and kinetic friction are two types of friction that occur when two objects are in contact with each other. Static friction is the force that must be overcome to initiate motion between two surfaces that are in contact with each other but are not moving relative to each other. It is caused by the interlocking of rough surfaces at the microscopic level, and it increases as the force pushing the surfaces together increases. Once motion between the surfaces starts, the static friction is no longer present. Kinetic friction, also known as sliding friction, is the force that opposes the motion of two surfaces that are in contact with each other and are moving relative to each other. It is caused by the rubbing of the surfaces against each other and the resistance of the molecules in the surfaces to being moved. Kinetic friction is generally less than static friction, but it can still be a significant force, especially at high speeds. Both static and kinetic friction can be quantified using a coefficient of friction, which is a dimensionless number that represents the ratio of the frictional force between two surfaces to the normal force (the force perpendicular to the surfaces). The coefficient of static friction is typically greater than the coefficient of kinetic friction for a given pair of surfaces, because it takes more force to overcome the interlocking of the surfaces at rest than to maintain motion once it has started.
Students also viewed these Mechanics questions
-
Block A with weight 3w, slides down an inclined plane S of slope angle 36.9° at a constant speed while plank B, with weight w, rests on top of A. The plank is attached by a cord to the wall (Fig....
-
In Figure a crate slides down an inclined right-angled trough. The coefficient of kinetic friction between the crate and the trough ir ? k .What is the acceleration of the crate in terrns of ? k , ,...
-
A block of mass m slides down an inclined plane into a loop-the-loop of radius r (Fig. 7.33). (a) Neglecting friction, what is the minimum speed the block must have at the highest point of the loop...
-
The engines of most rockets produce a constant thrust (forward force). However, when a rocket is fired, its acceleration increases with time as the engine continues to operate. Is this situation a...
-
What is a transistor composed of, and what are some of its functions?
-
Assume that all of the facts in Problem 3 remain unchanged except that Green paid $211,800 for 60% of the voting shares of Mansford. Required: (a) Prepare a consolidated balance sheet at January 1,...
-
Try to find out information about the policies for employees use of social networking sites at a familiar virtual organization. If you were charged with creating guidelines for the use of social...
-
On January 1, 2012, Valuation Allowance for Trading Investments had a zero balance. On December 31, 2012, the cost of the trading securities portfolio was $ 105,800 and the fair value was $101,600....
-
You have been asked to prepare a December cash budget for Ashton Company, a distributor of exercise equipment. The following information is available about the company's operations: a. The cash...
-
Using exponential smoothing with trend, a smoothing constant of 4, if the forecast for January had been 110, compute what the exponential forecast would have been for the month of April using January...
-
Brother Bernard is a very large dog with a taste for tobogganing. Ernie gives him a ride down Idiots' Hill---so named because it is a steep slope that levels out at the bottom for 10 m, and then...
-
One morning, Lou was in a particularly deep and peaceful slumber. Unfortunately, he had spent the night in the back of a dump truck, and Barry, the driver, was keen to go off to work and start...
-
Effect of Depreciation on ROI Computations The Streetorn Corporation is contemplating the purchase of a new piece of equipment. The equipment has an expected life of five years and is expected to...
-
MATA 31 Calculus 1 winter 2024 Problem Set 2 Feb 11 Feb 18 on Crowdmark Each question is 25 points. 1. (25) (a) (15) Given that lim 3 2x + 3 for = 0.1 = 3, find the largest & that works (b) (10) Find...
-
A retailer has product demand 9600 units a year. The carrying cost of one unit of the product is $3.50 per year. Ordering costs are $28 per order. a. What is the Economic Order Quantity (EOQ)? (2...
-
How do I key in this into journal entries Crest Pte Ltd Trial Balance Cash Accounts receivable, Augusta Office Equipment Opening Bal as at 1 Mar 2021 Debit (5) Credit ($) 15,000 5,000 13,000...
-
If an atomic layer is approximately 0.1nm thick, how fast are the protein synthesis machines working in atomiclayers/satomiclayers/s?
-
Consider the 4 sets of data shown below for v(t) the velocity of an object in freefall with the corresponding linear curve fits. The slope of the best fit line gives the acceleration, and for...
-
Identify and understand the features of a standard costing system
-
Which internal control principle is especially diffi cult for small organizations to implement? Why?
-
Why are almost all tetrahedral complexes high-spin?
-
A bowler releases a bowling ball with no spin, sending it sliding straight down the alley toward the pins. The ball continues to slide for a distance of what order of magnitude, before its motion...
-
Following Thanksgiving dinner your uncle falls into a deep sleep, sitting straight up facing the television set. A naughty grandchild balances a small spherical grape at the top of his bald head,...
-
(a) A thin rod of length h and mass M is held vertically with its lower end resting on a frictionless horizontal surface. The rod is then released to fall freely. Determine the speed of its center of...
-
1. (A nice inharitage) Suppose $1 were invested in 1776 at 3.3% interest compounded yearly a) Approximatelly how much would that investment be worth today: $1,000, $10,000, $100,000, or $1,000,000?...
-
Why Should not the government subsidize home buyers who make less than $120K per year. please explain this statement
-
Entries for equity investments: 20%50% ownership On January 6, 20Y8, Bulldog Co. purchased 25% of the outstanding common stock of $159,000. Gator Co. paid total dividends of $20,700 to all...
Study smarter with the SolutionInn App