What Is Rosie's Power Output When Pushing a Box?

AI Thread Summary
To calculate Rosie's power output while pushing a box, the relevant formula is Power = Work/Time. Given that Rosie exerts a horizontal force of 170 N and moves at a speed of 16 m/min, the power can be determined using the equation P = F * V. Converting the speed to meters per second (0.2667 m/s), the power output is calculated as P = 170 N * 0.2667 m/s, resulting in approximately 45.34 W. It's important to ensure unit consistency throughout the calculations. The discussion emphasizes the correct application of physics equations to derive power output.
Yavko2510
Messages
3
Reaction score
0

Homework Statement



Rosie (mass 58 kg) pushes a box with a horizontal force of 170N (38.216 lb) at a speed of 16 m/min. What is Rosie's power output? Answer in units of W.


Homework Equations



Work/Time = Power

MGH/T = Power
.5MV^2 = Power


The Attempt at a Solution



58(.2667 m/sec)^2/2 = power
2.06 = power
 
Physics news on Phys.org
The Power output is rather Work done multiplied by the time taken!
 
The horizontal force is 170 N

P = W/T = F*D/T = F*V

Check your units. You calculated Kinetic energy.

Watts are N-m/s.
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
View full post »

Similar threads

What is the Power Output of Gravity?
Replies
6
Views
2K
Determining power output at different time intervals
Replies
4
Views
2K
How many crates can you load in a minute with different average power outputs?
Replies
1
Views
2K
Power output of a intercooler and turbocharger
Replies
1
Views
2K
Power output by basketball player when jumping
Replies
7
Views
3K
Calculating Pump Power and Fountain Height from Water Ejection Speed
Replies
20
Views
4K
Time for which RTG will supply the required energy output?
Replies
15
Views
2K
Power Output of a Turbine (Rotational Energy)
Replies
13
Views
4K
Fire Hose Power Output, Given Height and Radius of Hose
Replies
8
Views
2K
How Do You Calculate Race Car Acceleration and Power Output?
Replies
20
Views
2K

Hot Threads

Recent Insights

Back
Top