Question

A solid spare of mass 2kg roll on a smooth horizontal surface at 10m/s . It than rolls up a smooth inclined plane of inclination 30° hight attained by sphere in meter before stopping is :take g =10ms-²
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Answer 1

Answer:

Correct option is

Mechanical energy is conserved.

u = initial velocity v = final velocity = 0

h = initial height

d = final height

m = masS

g=10m/s²

1 mu²+ mgh 1 = my² +mgd

dividing by m on both sides and substituting values,

1 2 1 x 10² 10 x 0 = x0² + 10d

10d 100 2 - = 50

50 10 d = 5meters