Question

A bullet (m = 0.023kg) is fired with a speed of 95.00m/s and hits a block (M = 2.30kg) supported by two light strings , stopping quickly. Find the height to which the block rises and Find the angle (in degrees) through which the block rises, if the strings are 1.06 m in length. I have found the height but i don't understand how to find the angle

Answer 1

Draw a diagram again. You have a triangle formed by:
- the string
- the vertical at which the string was originally resting
- the horizontal displacement of the block from that vertical

If you know the height the block goes up, then you know the length of the vertical of that triangle. You also know the length of that string. Now use trig functions.

Answer 2

i must be setting up the triangle wrong cause i'm getting an incorrect answer.

Answer 3

ok now i got it, theta = 16.8 deg! thanks so much!