Question
Hi please slove these question also...
A ) Two particles of mass 3 kg and 4 kg are connected by a light inelastic string passing over a smooth fixed pulley. The system is released from rest with the string taut and both particles at a height of 2 m above the ground. Find the velocity of the 3 kg mass when the 4 kg mass reaches the ground, and find when the 4 kg mass reaches the ground.
B) Briefly describe an experiment to find the coefficient of friction between brick and tile. You may assume access to a tile slab, a number of bricks and basic scientific equipment, such as a pulley, weighing machine, etc.
Please reply ASAP...Waiting for your reply.
(A)4g-T = 4a
T-3g = 3a
solve for a
use h = 0t+1/2at2 for getting t
and v = 0 +at for v
(B) get F applied and acceleration of the body
then use F-kmg = ma
for getting k (coefficient of friction)