Plastic is a good insulator.
Doorknob MAY be; depends on what it's made of.
-- more mass involved
-- less distance between the two objects
Answer:
The centripetal acceleration is 30 m/s²
Explanation:
Given that,
Radius = 0.30 m
Acceleration = 2.0 rad/s²
Time = 5.0
We need to calculate the centripetal acceleration
Using formula of angular velocity

Where,
a = acceleration
t = time
Put the value into the formula


Using formula of centripetal acceleration



Hence, The centripetal acceleration is 30 m/s²
Answer:
Explanation:
Given
Potential Energy is given by

And Force is given by

Particle will be at equilibrium when Potential Energy is either minimum or maximum

i.e.

So angular Frequency of small oscillation is given by

for 
we get 

