KVPY2013PhysicsWork, Power and Energy
A block of mass m slides from rest at a height H on a frictionless inclined plane as shown in the figure. It travels a distance d across a rough horizontal surface with coefficient of kinetic friction , and compresses a spring of spring k by a distance x before coming to rest momentarily. Then the spring extends and the block travels back attaining a final height of h . Then
Options
- Ah=H-2 (d+x)
- Bh=H+2 (d+x)
- Ch= H -2 d + kx ² / mg
- D=H-2 (d+x)+k x² / 2 m g
Correct answer
A. h=H-2 (d+x)
Step-by-step solution
mgH -2 mg ( d + x )- mgh =0 ~h = H -2 ( d + x )