A light elastic spring of natural length 21 has its ends attached to two points Pand Q which are at the same horizontal level. The length PQ is 21. A particle of mass m is fastened to the midpoint of the spring and is held at the midpoint of PQ. The particle is released from rest and first comes to instantaneous rest when both parts of the string make an angle of 60" with the line PQ. Find the modulus of elasticity of the spring. 3.
A light elastic spring of natural length 21 has its ends attached to two points Pand Q which are at the same horizontal level. The length PQ is 21. A particle of mass m is fastened to the midpoint of the spring and is held at the midpoint of PQ. The particle is released from rest and first comes to instantaneous rest when both parts of the string make an angle of 60" with the line PQ. Find the modulus of elasticity of the spring. 3.
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Transcribed Image Text:3. A light elastic spring of natural length 21 has its ends attached to two
points Pand Q which are at the same horizontal level. The length PQ is 21. A
particle of mass m is fastened to the midpoint of the spring and is held at the
midpoint of PQ. The particle is released from rest and first comes to
instantaneous rest when both parts of the string make an angle of 60° with the
line PQ. Find the modulus of elasticity of the spring.
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