Overview
hi pls solve these questions with hand written solution. then solve the lab . thanks . the lab instruction is below
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23.A marble rolls down an incline at 30°30° from rest. (a) What is its acceleration? (b) How far does it go in 3.0 s?
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45.A boulder of mass 20 kg and radius 20 cm rolls down a hill 15 m high from rest. What is its angular momentum when it is half way down the hill? (b) At the bottom?
61.A merry-go-round has a radius of 2.0 m and a moment of inertia 300kg⋅m2.300kg·m2. A boy of mass 50 kg runs tangent to the rim at a speed of 4.0 m/s and jumps on. If the merry-go-round is initially at rest, what is the angular velocity after the boy jumps on?
lab links : https://www.vascak.cz/data/android/physicsatschool...
http://physics.bu.edu/~duffy/HTML5/mass_on_spring_...
http://phet.colorado.edu/sims/html/masses-and-spri...