Calculating Work and Time for Power Motors | Physics Homework Help

Thread starter kim032688
Start date May 18, 2010
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Motor Physics Power

AI Thread Summary

The discussion focuses on calculating work and time for two vacuum cleaner motors with power outputs of 1.275 hp and 0.875 hp. For part (a), participants are tasked with determining the work done by each motor in 5.00, although the lack of units for "5.00" creates confusion. Part (b) involves calculating the time required for each motor to perform 115,000 kJ of work using the relationship between power, work, and time. Participants express uncertainty about how energy relates to power and seek clarification on the problem's details. The conversation highlights the need for clear units and understanding of fundamental physics concepts.

May 18, 2010

kim032688

Homework Statement

the motors of two vacuum cleaners have net power outputs of 1.275hp and 0.875hp.(a)how much work in kJ can each motordo in 5.00?(b)how long does it take for each motor to do 115,000kJ of work

Homework Equations

P=w over t

The Attempt at a Solution

no idea..

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May 18, 2010

nickjer

Well how does energy relate to power? Also part (a) mentions 5.00 with no units.

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