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Question Two Two particles P and Q have masses 7 m and Fm respectively, where F>7. The particles are connected by a light inextensible string which passes over a smooth light fixed pulley. The system is held at rest with the string taut, the hanging parts of the string vertical and with P and Q at the same height above a horizontal plane as shown. The system is released from rest. After release, P descends with acceleration8 (a) Draw a diagram to illustrate the information 42 (b) Show that the ten si on in the string as Q moves up ismg (c) Find the value of F (d) State how you used the information that the pulley is smooth. (e) After descending for 1.2sec, the particle A reaches the plane and brought to rest. If B does not reach the pulley in the subsequent motion, find the greatest height reached by B above the plane.

Question Two Two particles P and Q have masses 7 m and Fm respectively, where F>7. The particles are connected by a light inextensible string which passes over a smooth light fixed pulley. The system is held at rest with the string taut, the hanging parts of the string vertical and with P and Q at the same height above a horizontal plane as shown. The system is released from rest. After release, P descends with acceleration8 (a) Draw a diagram to illustrate the information 42 (b) Show that the ten si on in the string as Q moves up ismg (c) Find the value of F (d) State how you used the information that the pulley is smooth. (e) After descending for 1.2sec, the particle A reaches the plane and brought to rest. If B does not reach the pulley in the subsequent motion, find the greatest height reached by B above the plane.

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Question Two Two particles P and Q have masses 7 m and Fm respectively, where F>7. The particles are connected by a light inextensible string which passes over a smooth light fixed pulley. The system is held at rest with the string taut, the hanging parts of the string vertical and with P and Q at the same height above a horizontal plane as shown. The system is released from rest. After release, P descends with acceleration8 (a) Draw a diagram to illustrate the information 42 (b) Show that the ten si on in the string as Q moves up ismg (c) Find the value of F (d) State how you used the information that the pulley is smooth. (e) After descending for 1.2sec, the particle A reaches the plane and brought to rest. If B does not reach the pulley in the subsequent motion, find the greatest height reached by B above the plane.
Transcribed Image Text:Question Two Two particles P and Q have masses 7 m and Fm respectively, where F>7. The particles are connected by a light inextensible string which passes over a smooth light fixed pulley. The system is held at rest with the string taut, the hanging parts of the string vertical and with P and Q at the same height above a horizontal plane as shown. The system is released from rest. After release, P descends with acceleration8 (a) Draw a diagram to illustrate the information 42 (b) Show that the ten si on in the string as Q moves up ismg (c) Find the value of F (d) State how you used the information that the pulley is smooth. (e) After descending for 1.2sec, the particle A reaches the plane and brought to rest. If B does not reach the pulley in the subsequent motion, find the greatest height reached by B above the plane.
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