Egyptian Pyramid Workers Push a 1200-Kg Block Up an Incline $\times$

question 60

Multiple Choice

Egyptian pyramid workers push a 1200-kg block up an incline that has an angle of 69 degrees to the vertical,at a constant speed of 0.5 m/s.The coefficient of kinetic friction between the block and the incline surface is 0.44.How much power must the workers supply?

• A)3.1 \(\times\) 10² W
• B)9.3 kW
• C)4.5 kW
• D)7.9 kW
• E)2.4 kW

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