Please help with this, I cant figure it out. A small mass m slides with negligib
ID: 1334997 • Letter: P
Question
Please help with this, I cant figure it out.
A small mass m slides with negligible friction down an incline at an angle of 25.76 degree with respect to the horizontal. It then drops down to a horizontal surface and bounces elastically back up as shown. The picture is to scale. It shows the position of the mass at equal time intervals starting from rest at S. The height of the mass at X is the same as at V. the motion of the mass m. The speed change between S and U is between U and T. The velocity of m at X is that at V.Explanation / Answer
1.The speed change between S and U is equal to between U an T (Since height difference is same ).
2.The velocity of m at X is equal to that at V (Both are at same height ).
3.The mechanical energy of m at V is equal to that at P(mechanical energy remains conserved).
4.The speed of m at P is less than that at X (P is at high potential energy so less kinetic energy )
5.The size of total force on m at Q is less than that at R ( a large impulse force will act at R)
6. The size of total force on m at U is less than at Q ( force at Q is mg while force at U is mgsin (25.76)