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sailsinthesun

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**[SOLVED] Particle in hemispherical bowl**

## Homework Statement

A 195 g particle is released from rest at point A along the horizontal diameter on the inside of a frictionless, hemispherical bowl of radius R = 31.0 cm.

http://www.webassign.net/pse/p8-52.gif

(a) Calculate the gravitational potential energy of the particle-Earth system when the particle is at point A relative to point B.

(b) Calculate the kinetic energy of the particle at point B.

(c) Calculate its speed at point B.

(d) Calculate its kinetic energy when the particle is at point C.

(e) Calculate the potential energy when the particle is at point C.

## Homework Equations

## The Attempt at a Solution

(a)PE=mgh so PE=.195kg*9.8m/s^2*.31m=.59241J

(b)KE=.5mv^2 but I have no idea how to find the velocity at the point. Any help?

(c)Needed to answer B..

(d)Also need to know how to calculate velocity at this point...

(e)PE=mgh=(.195kg)(9.8m/s^2)(.2067m)=.39494

Any help on b, c, and d?