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ZeuZ
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This one the last questions on my mechanics paper, its hard to visualize without drawing a diagram i found, but i still can't solve it
1.
A tractor of 6000kg approaches a slope at arcsin(0.05) to the horizontal. The non-gravitational resistance to motion on this slope is 2000N. The tractor accellorates uniformly from 3m/s to 3.25m/s over a distance of 100m while climbing the slope
1. Calculate the time taken to travel this distance of 100m, and the average power required over this time period.
p = Fv
p= F/t
f = ma
Work Done = 0.5mv^2
i got as far as using s = (u+v)/2 x t, which gives the time as 32 seconds. I'm just not sure how to find the average power because i don't know where to put the 2000N resistance in the equation, plus the angle of the slope confuses the issue somewhat
1.
A tractor of 6000kg approaches a slope at arcsin(0.05) to the horizontal. The non-gravitational resistance to motion on this slope is 2000N. The tractor accellorates uniformly from 3m/s to 3.25m/s over a distance of 100m while climbing the slope
1. Calculate the time taken to travel this distance of 100m, and the average power required over this time period.
Homework Equations
p = Fv
p= F/t
f = ma
Work Done = 0.5mv^2
The Attempt at a Solution
i got as far as using s = (u+v)/2 x t, which gives the time as 32 seconds. I'm just not sure how to find the average power because i don't know where to put the 2000N resistance in the equation, plus the angle of the slope confuses the issue somewhat
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