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In 1985 in San Antonio, Texas, an entire hotel building was moved several
blocks on 36 dollies. The mass of the building was about 1.45 x 10^6 kg. If
1.00 x 10² MJ of work was done to overcome the force of resistance that
was just 2.00 percent of the buildings weight, how far was the building
moved?

Respuesta :

Answer:

The building was moved to a distance of, S = 510.2 m

Explanation:

Given data,

The mass of the building, m = 1.45 x 10⁶ kg

The work done to overcome the force of resistance, E = 1 x 10⁸ J

The force of resistance of the building, 2% of building weight

                                          Fₓ =  2 x 1.45 x 10⁶ x 9.8 / 100

                                               = 284200 N

The work done on the building,

                                    E = Fₓ · S

∴                                   S = E /  Fₓ

                                        = 1.45 x 10⁶ / 284200 N

                                        = 510.2 m

Hence, the building was moved to a distance of, S = 510.2 m

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