Particles a, b of mass 3m, 2m respectively are attached to the ends of a light inextensible string passing over a smooth pulley. the system is held at rest, the string is taut and the parts of the string not in contact with the pulley are vertical. the system is then released. after b has travelled 5 m it hits and coalesces with a particle of mass 5m at rest. find the impulse in the string. find also the time taken from the impact until the system first comes momentarily to rest. [take g as 10 m/s? ].

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

v 154.9= 0.9 length length s little over 154.9cm

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2