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 0 as ea riptdrfe k shtors tai view thewm otieopof the masse mass at equal time intervals starting from rest at x. The height of the mass at Q is the same as at P. Click here to view the motion of the mass m . The speed of m at Q is . The mechanical energy of m at R is . The speed change between X and U is . The velocity of m at P is The size of the total force on m at U is The size of the total force on m at R is The mass is in contact with the ground for a very brief time. Elastically implies that no energy is lost. that at T that at P between U and V that at Q at R at S

Explanation / Answer

(a) Greater than ( because at T only horizontal component of the velocity exists)

(b) Equal to (Total mechanical energy is conserved)

(c) Equal to( As the acceleration is constant)

(d) Equal to

(e) Less than

(f) Less than

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