Question: A window washer pushes his scrub brush up a vertical window at constant speed by applying a force F as shown in Fig. 5.65. The

A window washer pushes his scrub brush up a vertical window at constant speed by applying
a force F as shown in Fig. 5.65. The brush weighs 12.0 N and the coefficient of kinetic friction is μk = 0.150. Calculate (a) the magnitude of the force F and (b) the normal force exerted by the window on the brush.

53.1%

53.1%

Step by Step Solution

★★★★★

3.34 Rating (187 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

IDENTIFY Apply F m to the brush Constant speed means a 0 Target variabl... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

P-M-L-M (203).docx

120 KBs Word File

Students Have Also Explored These Related Mechanics Questions!

As shown in fig 1.7, a manometer is attached to a tank of gas in which the pressure is 104.0 kPa. The manometer liquid is mercury, with a density of 13.59 g/cm3. If g = 9.81 m/s2 and the atmospheric...

A horizontal conveyor belt system has coefficient of kinetic friction of 0.65. The motor driving the system can deliver a maximum force of 2.5 106N. What maxi-mum total weight can be placed on the...

Two tanks are connected together as shown in Fig. P3.49, both containing water. Tank A is at 30 lbf/in.2, v = 8 ft3/lbm, V = 40 ft3 and tank B contains 8 lbm at 80 lbf/in. 2, 750 F. The valve is now...

Brothers Chris and Eric Christian are going to open a small automobile detailing business in a converted vintage gasoline station. They are using Raincross in their name to help connect their...

Hi, I need help with the below question a)Over several years, (1) one window washer in every (40) forty employed by Hi-Rise Cleaning Company has been involved in a fall from a window-washing scaffold...

Help A window washer weighing 706.7 N is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 227.3 N and is 4.155 m long. What is the force in each rope when the...

23136 .i "5' Ci} particle under constant acceleration particle under a net force 0 2] particle in equilibrium none of the above Correct. The squeegee is subject to frames, but its velocity in the...

A window washer weighing 706.7 N is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 227.3 N and is 4.155 m long. What is the force in each rope when the window...

A window washer with mass 90.0 kg first climbs 45.0 m upward to the top of a building, then from the top goes down 85.0 m to the ground. (a) What is the potential energy of the window washer at the...

1.A window washer weighing 771.1 N is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 299.4 N and is 4.727 m long. What is the force in each rope when the window...

Write the structure of the Grignard reagent formed from each of the following compounds on reaction with magnesium in diethyl ether: (a) p-Bromofluorobenzene (c) Iodocyclobutane (b) Allyl chloride...

Does the service characteristic of intangibility, inseparability, heterogeneity, and/or perishability change once a service is placed on the web?

Which of the following lists the four major financial statements of a company? Question content area bottom Part 1 A . Income Statement, Statement of Retained Earnings, General Ledger, Balance Sheet...

Braking distance was evaluated for 4 different brake materials. Run an analysis of variance to determine if there is a difference in treatments? Use the six steps of hypothesis testing at a 0.05...

A construction company has a fleet of vehicles that are used by crews. The vehicles cost $35,000 each to purchase new and depreciate at a declining-balance rate of 30% per year. The vehicles have a...

You must decide whether to produce "Straight Out of New Canaan, a biographical film about four thugs who acquire fortune and fame as "gansta rappers. The budget, or initial investment, to produce the...

1) What legislation requires the implementation and attestation of internal controls for publicly traded companies? 2) What two principles of GAAP apply to accounting for bad debts? 3) October 1, a...

PHW M6 I=1u w=10u R1 35k 1) Parameter for mosfet : |VTH|=1 V, ncox=200 A/V2, pox=100 A/V2, An= Ap=0.02 V-1. Use a single 5V power supply for VDD. I did not put a common mode DC voltage at the input...

In October 2013 Franklin Electronics won an 18-month labor-intensive product development contract awarded by Spokane Industries. The award was a cost reimbursable contract with a cost target of $2.66...

Question 19 (3 points) Listen The normal random variable, x, is the dollar amount of the cost of automobile repair. Research shows that the mean automobile repair cost is 500 dollars and the standard...

1. A firm is considering two mutually exclusive projects, X and Y, with the following cash flows: 0 1 2 3 4 Project X -$1,000 $110 $320 $430 $700 Project Y -$1,000 $1,000 $100 $50 $50 The projects...

(Q7.2.a) A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 138.7 seconds. Assuming drive-through times are normally distributed with a...