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Results tagged with homework-and-exercises
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user 43959
Applies to questions of primarily educational value - not only questions that arise from actual homework assignments, but any question where it is preferable to guide the asker to the answer rather than giving it away outright. Please READ THE GUIDANCE IN META before asking homework-like questions.
2
votes
3
answers
17k
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Why is using Newton's First Law failing me? [closed]
A factory worker pushes a 29.7kg crate a distance of 5.0m along a level floor at constant velocity by pushing downward at an angle of 32$^\circ$ below the horizontal. The coefficient of kinetic fricti …
- 207
1
vote
2
answers
477
views
Which Force would help find the mass?
Two masses, A and B, are connected to a rope. A constant upward force 86.0N is applied to box A. Starting from rest, box B descends 12.1m in 4.70s . The tension in the rope connecting the two boxes is …
- 207
0
votes
1
answer
486
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Help me understand constant speed on a slope
An object is pulled up a slope at constant speed. I'm trying to find the Tension on the rope.
$$m = 65kg \Rightarrow W=-637$$
$$\mbox{constant speed} \Rightarrow a = 0$$
$$\mbox{angle of slope} = 45^ …
- 207
2
votes
2
answers
391
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In this particular problem: Is the mass of the system the mass of the person?
I am doing this problem:
The upward normal force exerted by the floor is 620 N on an elevator passenger who weighs 650 N.
What is the magnitude of the acceleration?
This is how I solved it:
$$\sum F …
- 207