Sir Isaac newton's book on laws of motion and gravity is considered of what significance 
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Hello!
a) Assuming this is asking for the minimum speed for the rock to make the full circle, we must find the minimum speed necessary for the rock to continue moving in a circular path when it's at the top of the circle.
At the top of the circle, we have:
- Force of gravity (downward)
*Although the rock is still connected to the string, if the rock is swinging at the minimum speed required, there will be no tension in the string.
Therefore, only the force of gravity produces the net centripetal force:
We can simplify and rearrange the equation to solve for 'v'.
Plugging in values:
b)
Let's do a summation of forces at the bottom of the swing. We have:
- Force due to gravity (downward, -)
- Tension force (upward, +)
The sum of these forces produces a centripetal force, upward (+).
Rearranging for 'T":
Plugging in the appropriate values:
Answer:
1
2
3
Explanation:
From the question we are told that
The speed of the car is
The length of the ramp is
The constant velocity of the traffic
Generally the acceleration of the car is mathematically represented as
Here u is equal to zero given that the car started from rest so
=>
Generally the time taken is mathematically represented as
=>
=>
The distance traveled by the traffic is mathematically represented as
Here a is zero given that the traffic was moving at constant speed
=>
=>