- #1
chinnie15
- 29
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Homework Statement
Suppose you lift a 23kg box by a height of 1.0m. How much work do you do in lifting the box?
230 J
Instead of lifting the box straight up, suppose you push it up a 1.0 -high ramp that makes a 30 degree angle with the horizontal. Being clever, you choose a ramp with no friction. How much force is required to push the box straight up the slope at a constant speed?
113N
How long is the ramp?
2m
Use your force and distance results to calculate the work you do in pushing the box up the ramp.
This is where I'm having trouble!
Homework Equations
W=Fdcosθ
The Attempt at a Solution
I plugged what I already got into the above equation, and got the answer of 195J. However, it's telling me the answer is 230J? But how? Isn't that why they had me find F and d?
Thank you for any help!