xbryx6892 xbryx6892

09-02-2024
Physics

contestada

A car of mass 2,000 kg is lifted up a distance of 30 m by a crane in 1 minute. A second crane does the same job in 2 minutes. The power supplied by second crane is :
a. 4900 W
b. 9800 W
c. 19.6 kW
d. 980 W

Respuesta :

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