A body decelerates uniformly to a constant speed and after some time it accelerates uniformly Draw the shape of speed time graph
for such a motion . Label the three sections of this graph. What is the quantity which is measured by the area occupied under speed time graph ?
1 answer:
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Answer:
Explanation:
By analyzing the torque on the wheel we get:
Solving for T:
On the object:
Replacing our previous value for T:
The relation between angular and linear acceleration is:
So,
Solving for α:
The linear acceleration will be:
And finally, the tension will be:
These are the values of all the variables: α, a, T
Answer:
The force will be 54.0 units
Explanation:
The magnitude of the electrostatic force between two charged objects is given by Coulomb's Law:
where
k is Coulomb's constant
q1, q2 are the magnitude of the two charges
r is the separation between the two charges
From the equation, we see that the magnitude of the force is directly proportional to the charge of object 2:
In this problem, the initial force between the two objects is
F = 18.0 N
And so, when the charge on object 2 is tripled,
The new electrostatic force will be
So, the force will also triple: since the original force was 18.0 units, the new force will be