20 The diagram shows particles A and B of masses 0 2 kg and

Last updated: 6/12/2023

20 The diagram shows particles A and B of masses 0 2 kg and m kg respectively connected by a light inextensible string which passes over a fixed smooth peg The system is released from rest with B at a height of 0 25 m above the floor B descends hitting the floor 0 5 s later All resistances to motion may be ignored A 0 2 kg B m kg 0 25m 1 Find the acceleration of B as it descends ii Find the tension in the string while B is descending and find also the value of m iii When B hits the floor it comes to rest immediately and the string becomes slack Find the length time for which B remains at rest on the ground before being jerked into motion again