The discussion revolves around a ballistic pendulum problem involving a 25-gm bullet and a block weighing 98N. The scenario includes calculating the length of the arc through which the pendulum swings after the bullet strikes the block.
Some participants have provided hints regarding the conservation principles involved, while others express uncertainty about the next steps, particularly in calculating the arc length. Multiple interpretations of the problem setup are being explored.
There is mention of the bullet embedding into the block, which may influence the calculations. The radius of the pendulum's swing is specified as 1m, but further details on the angle and arc length remain unclear.
acissej_o3 said:
tiny-tim said:Hi acissej_o3! Welcome to PF!
Hint: the bullet will be embedded in the block, so they will move together.
Use conservation of momentum to find the initial velocity, and then use conservation of energy to find the height!
acissej_o3 said:
tiny-tim said:easy-peasy!
the block moves on a circle of radius 1m …
so the cos of the angle is … ?