Question: A man (m 1 = 90 kg) is standing on a railroad flat car that is 9.0 m long and of unknown mass m 2

A man (m₁= 90 kg) is standing on a railroad flat car that is 9.0 m long and of unknown mass m₂. The man and the car are initially at rest on a level track (Fig. P7.74A), and the wheels of the car are friction less. The man then runs to the opposite end of the car and the car moves a distance 1.5 m to the left (Fig. P7.74B). Estimate the mass of the car.

Figure P7.74

? A B

A B

Step by Step Solution

★★★★★

3.39 Rating (168 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The center of mass of the flat carman system must remain stationary If we set up a coordinate ... 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

Students Have Also Explored These Related College Physics Reasoning Questions!

Rescue your friend (mass 65.0 kg) is standing on the ice in the middle of a frozen pond. There is very little friction between her feet and the ice, so she is unable to walk. Fortunately, a light...

A woman with mass 50 kg is standing on the rim of a large disk that is rotating at O.50rev/s about an axis through its center. The disk bas mass no kg and radius 4.0 m. calculate the magnitude of the...

A 91-kg man's thighbone has a relaxed length of 0.50 m, a cross-sectional area of 7.0 104 m2, and a Young's modulus of 1.1 1010 N/m2 . By how much does the thighbone compress when the man is...

please I need help with as soon as possible Physics 12 AS01G Practice Problems Name: Part A 01 Bugs drives a race car at 180 km/h around a flat circular track of radius 90 m. Determine the...

using physics equations solve. (A sketch would help a lot) please I need help with this as soon as possibl. thank youuu ?? Physics 12 AS01G Practice Problems Name: Part A 01 Bugs drives a race car at...

Hi I need answers to these questions for my assessment: 01 - Bugs drives a race car at 180 km/h around a flat circular track of radius 90 m. Determine the centripetal acceleration of the car. 02 -...

Final Review Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. Which of the following is a pair of scalar quantities? a. Speed Distance c....

Physics 12 ASOlG Practice Problems Name: Part A 01 Bugs drives a race car at 180 kin-"h around a at circular Track of radius 90 m. Determine the centripetal acceleration of the car. 02 7 Daffy Duck...

Note: To simplify calculations, you may use g = 10 m/s in all problems.V =7.5 m/s Questions 2-4 refer to the following figure: B C - NWAVAN D velocity (m/s) 1. An object is thrown horizontally to the...

1. Two horizontal forces, F, and F,, are acting on a box, but only F, is shown in the drawing. F, can point either to the right or to the left. The box moves only along the x axis. There is no...

you and bob own and run the local paint ball company, paint ball champs (pbc) you want to draft a contract for your venue that limits pbcs liability to customers by excluding various sorts of legal...

George and May are a married couple. Before they got married, George bought a piece of land in rural Western Australia which he believed was rich in iron ore. Having established themselves...

How much would $100, growing at 5% per year, be worth after 25 years? Group of answer choices $267.52 $355.57 $338.64 $331.86 $314.93

=+where q is the number of engines per week, K is the number of assembly machines, and L is the number of labor teams. Each assembly machine rents for r = $10,000 per week, and each team costs w =...

The stability of a vehicle is often rated by the static stability factor, which is one-half the track width divided by the height of the center of gravity above the road. A typical SUV has a static...

A standard four-drawer filing cabinet is 52 inches high and 15 inches wide. If it is evenly loaded, the center of gravity is at the center of the cabinet. A worker is tilting a filing cabinet to the...

The towers holding small wind turbines are often raised and lowered for easy servicing of the turbine. Figure P8.16 shows a $1000 \mathrm{~kg}$ wind turbine mounted on the end of a 24-m-long, \(700...

A poll found that 35% of adults do not work at all while on summer vacation. In a random sample of 5 adults, let x represent the number who do not work during summer vacation. Complete parts a...

The financial statement which summarizes operating, investing, and financing activities of an entity for a period of time is the a. retained earnings statement. b. income statement. c. statement of...

A marketing manager for a cell phone company claims that the percentage of children aged 8- 12 who have cell phones differs from 55%. In a survey of 880 children aged 8-12 by a national consumers...