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A 50 meter chain with uniform density and a mass of 40 kilograms is hanging from the roof of a building under construction. How much work (in Nm) is required to pull the chain up?

Respuesta :

amna04352

Answer:

19,600 Nm

Step-by-step explanation:

WD = mgh

= 40 × 9.8 × 50

= 19600 Nm

wegnerkolmp2741o

Answer:

W = 19600 N m

Step-by-step explanation:

W = force * distance

The force is the weight times gravity since it is hanging down

W = 40 kg* 9.8 m/s^2 * 50m

    19600 kg m^2/s^2

A newton is  kg m/ s^2

W = 19600 N m

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