1. The problem statement, all variables and given/known data A 200g hamster sits on an 800 g wedge shaped block which in turn rests on a spring scale. An extra fine lubricating oil is sprayed on the top surface of the block, rendering it entirely frictionless, causing the hamster to slide down. Friction between the block and the scale is large enough that the block does not slip on the scale. What does the scale read as the hamster slides down? 2. Relevant equations 3. The attempt at a solution The hamster accelerates down the block with a = gsin##\theta## The vertical component of this acceleration is: ay = gsin2##\theta## So the downward force exerted by the hamster on the block and thus onto the scale is Fhamster = may I added this to the weight of the block and ended up with Reading = Mg + mgsin2##\theta## Reading = (0.800)(9.8) + (0.200)(9.8)sin240o Reading = 8.650N Which is incorrect. I feel that I'm on the right track but I've missed some critical detail. Where did I go wrong?