Question
A 2.0 kg ball is attached to the end of a 1.6 m string and spins...
- A 2.0 kg ball is attached to the end of a 1.6 m string and
spins in a vertical circle.
- What is the weight of the ball?
- Find the velocity if the centripetal force is four times the weight.
Homework Answers
Answer #1
Given that,
mass of ball (m)= 2kg
length of string=radius of vertical ball (r)= 1.6m
A. Weight of the ball (W)= mg ........... (it always act downward irrespective of the position of the ball )
Where, g= gravitational force =9.81 m/s2
therefore, W=m*g=2*9.81= 19.62 N
B.
Since we have given the condition that our centripetal force = 4 times the weight of the ball
so that according to the formula we have,
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