I have a question that's confusing, Will a large can of solids or empty can reach end of the ramp faster first in a can race? Al
1 answer:
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Answer:
A, B and F are the right answers
Explanation:
The formula is
A) Increasing both the radius and the speed by a factor of 9
=
<u><em>which means the acceleration will increase by a factor of 9</em></u>
B) Keeping the speed fixed and decreasing the radius by a factor of 9
=
<u><em>which means the acceleration will increase by a factor of 9</em></u>
C) Keeping the radius fixed and increasing the speed by a factor of 9
=
It will increase the acceleration 81 times
D) Keeping the speed fixed and increasing the radius by a factor of 9
=
It will decrease the acceleration by 9 times
E) decreasing both the radius and the speed by a factor of 9
=
It will decrease the acceleration by 9 times
F) Keeping the radius fixed and increasing the speed by a factor of 3
=
<u><em>It will increase the acceleration by 9 times </em></u>
Answer:
3.90 degrees
Explanation:
Let g= 9.81 m/s2. The gravity of the 30kg grocery cart is
W = mg = 30*9.81 = 294.3 N
This gravity is split into 2 components on the ramp, 1 parallel and the other perpendicular to the ramp.
We can calculate the parallel one since it's the one that affects the force required to push up
F = WsinΘ
Since customer would not complain if the force is no more than 20N
F = 20
So the ramp cannot be larger than 3.9 degrees