# Urgent help with physics homework

**1. The problem statement, ramp. variables and given/known data**

A block with mass m=5kg is placed at position A and given an initial velocity Va=2m/s Down a frictionless circular ramp. Between positions B and C it travels over a flat rough surface having a coefficient of kinetic friction Mk=.25. Finally it travels over a flat frictionless surface and contacts am uncompressed so spring with spring constant k=1250N/m. The block comresses the spring at distance Delta (X) and comes to rest at position D.

**2. Relevant equations**

A) beginning at position A use conservation of energy to calculate the blocks velocity when it reaches position B

B) begimning at position B use conservation of energy to calculate the block’s velocity when it reaches position C . Don’t forget friction!!!!

C) beginning at position C use conservation of energy to calculate the distance Delta(X) that the spring is compressed when the block reaches position D

D) starting over at position A use conservation of energy directly between positions A and D and show that you get the same distance Delta(X) as part c) without having to calculate the velocities at position B and C

**3.Please I’m super lost and have tried everything can someone solve and show me?!!!**

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