A spherical boulder of mass 98.1 kg and radius 22 cm rolls
without slipping down a hill 13 m high from rest.
(a)What is its angular momentum about its center when it is half
way down the hill?
Ans: 82.4 kg. m2/s
(b)What is its angular momentum about its center when it is at
the bottom?
Ans: 116 kg. m2/s
please show work thank you
Here we apply concept of rotational kinetic energy and mechanical energy conservation.


A spherical boulder of mass 98.1 kg and radius 22 cm rolls without slipping down a...
A spherical boulder of mass 147 kg and radius 26 cm rolls without slipping down a hill 13 m high from rest. (a) What is its angular momentum about its center when it is half way down the hill? (Enter the magnitude in kg · m2/s.) 90.4 Incorrect: Your answer is incorrect. kg · m2/s (b) What is its angular momentum about its center when it is at the bottom? (Enter the magnitude in kg · m2/s.)
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1) A solid ball of mass M and radius R rolls without slipping down a hill with slope tan θ. (That is θ is the angle of the hill relative to the horizontal direction.) What is the static frictional force acting on it? It is possible to solve this question in a fairly simple way using two ingredients: a) As derived in the worksheet when an object of moment of inertia I, mass M and radius R starts at rest...