You start driving north for 9 miles, turn right , and drive East for another 40 miles. At the end of driving, what is your staig
1 answer:
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Answer:
0.037 N/m
Explanation:
The web acts as a spring, so it obeys Hook's law:
(1)
where
F is the force exerted on the web
k is the spring constant
x is the stretching/compression of the web
In this problem, we have:
- The mass of the fly is
- The force exerted on the web is the weight of the fly, so:
- The stretching of the web is
So if we solve eq.(1) for k, we find the spring constant:
Answer:
Weight needed to balance the bar is
Explanation:
Given the weight of the bar is
The length of the bar is
The weight of the bar will be uniformly distributed over the entire span. We will consider this as a point load acting in the middle of span length, which is at a distance of from both ends.
Now applying momentum equation about balanced load we get, (see attachment)
Answer:
20 m/ s
Explanation:
change in velocity = 4m/ s
initial velocity = 0m/ s
- let velocity after 10s be v
cross multiplying
so the velocity after 10s will be 20m/s