b) The mass of the ball is 0.10 kg and the string is 45 cm long. If the tension in the string when the ball is at the top of the circle is 5.75 N, what is the speed of the rock at that location?
A ball is attached to a string and swung in a vertical circle at a
constant speed. Assume air resistance is negligible.
a) Draw a free body diagram of the force(s) acting on the ball at the bottom of the
circle. Also include in your diagram any non-zero velocity and/or acceleration
vector(s) of the ball. Label your coordinate system as the following:
• Positive is towards the centre of the circle
• Negative is away from the centre of the circle. b) The mass of the ball is 0.10 kg and the string is 45 cm long. If the tension in the
string when the ball is at the top of the circle is 5.75 N, what is the speed of the
rock at that location?
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