Answer:
We need 4 times more force to keep the car in circular motion if the velocity gets double.
Explanation:
Lets take the mass of the car = m
The radius of the arc = r
Given that speed of the car gets double ,v' = 2 v
Then the force on the car = F'
( radius of the arc is constant)
We know that
Therefore F' = 4 F
So we can say that we need 4 times more force to keep the car in circular motion if the velocity gets double.
Explanation:
if the elevator is moving upward with the constant speed the spring scale will read 18 N which is the mass of each of the two blocks attached by separate springs to the scale at opposite ends.
For this case the centripetal force is given by:
Where,
m: mass of the object
v: tangential speed
r: rope radius
Substituting values in the equation we have:
Then, doing the corresponding calculations:
Answer:
The centripetal force exerted on the rope is: