Physics · WORK, ENERGY AND POWER

A block of mass \( m \) is released from rest at the top of a smooth inclined plane of height \( h \). If the angle of inclination of the plane is doubled while keeping the vertical height \( h \) fixed, the speed of the block at the bottom of the plane will:

1. A
   double
2. B
   remain completely unchanged
3. C
   decrease by a factor of 2
4. D
   increase by a factor of \( \sqrt{2} \)