Q2.1 Consider a ball of mass 72 g whirled with a constant speed of 3.4ms around in a (nearly) horizontal circle of radius 65 cm on the end of a thin piece of string, as shown. (a) Calculate the centripetal acceleration and force. V = 3.4ms 65 cm 72g thin string (b) Explain why the force provided by the string cannot act horizontally. (c) Explain a probable reason why the string breaks when the speed is increased to 5.0ms1.
Q2.1 Consider a ball of mass 72 g whirled with a constant speed of 3.4ms around in a (nearly) horizontal circle of radius 65 cm on the end of a thin piece of string, as shown. (a) Calculate the centripetal acceleration and force. V = 3.4ms 65 cm 72g thin string (b) Explain why the force provided by the string cannot act horizontally. (c) Explain a probable reason why the string breaks when the speed is increased to 5.0ms1.
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Transcribed Image Text:Q2.1
Consider a ball of mass 72 g whirled with a constant speed of
3.4ms around in a (nearly) horizontal circle of radius 65 cm on the
end of a thin piece of string, as shown.
(a) Calculate the centripetal acceleration and force.
V = 3.4ms-
65 cm
72g
thin string
(b) Explain why the force provided by the string cannotlact horizontally.
(c) Explain a probable reason why the string breaks when the speed is increased to 5.0ms1.
(d) In what direction does the ball move immediately after the string breaks?
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