Pulleys Exam Question - Exercise 10F Q3 Year 1 Pearson Textbook - Statistics and Mechanics

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Timestamp
0:00 Intro
0:48 Part a
4:52 Part b
6:47 Part c
9:06 Part d
9:50 Part e


Thank you to Mr R for this Challenging A-Level Pulleys Exam Question. This question is taken from the Pearson Mechanics Textbook Year 1.

This is a 17 mark Hard Pulleys question which tests suvat in pulleys and F=ma for connected bodies.

Here is a copy of the question:
Two particles A and B have mass m kg and 3 kg respectively, where m is greater than 3. The particles are connected by a light inextensible string which passes over a smooth, fixed pulley.

Initially A is 2.5 m above horizontal ground. The particles are released from rest with the string taut and the hanging parts of the string vertical, as shown in the Figure.

After A has been descending for 1.25 s, it strikes the ground. Particle A reaches the ground before B has reached the pulley.

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