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 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 X. The height of the mass at Q is the same as at T. Click here to view the motion of the mass m The mechanical energy of m at R is that at T The velocity of m at T is that at Q The speed change between X and U is between U and S T that at P The speed of m at Q is The size of the total force on m at U is at T The size of the total force on m at Vis at R The mass is in contact with the ground for a very brief time. Elastically implies that no energy is lost. H Tries 6/12

Explanation / Answer

. the mechanical energy of m at R is less that at T

. the velocity of m at T is equal that at Q

. the speed change between X and U is greater between U and S

. the speed of m at Q is equal that at P

. the size of the total force on m at U is greater at T

. the size of the total force on m at V is less at R

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