A small mass m slides with negligible friction down an incline at an angle of 25

Question

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. _x, u, 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. Click here to view 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. The mechanical energy of m at V is * that at P. The speed of m at P is * that at X. The size of the total force on m at Q is | * | at R. The size of the total force on m at U is ] *1 at Q. The mass is in contact with the ground for a very brief time. Elastically implies that no energy is lost.

Explanation / Answer

a)

greater than

b)

equal

c)

less than

d)

equal

e)

greater than

f)

less than

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