A small block of mass m = 230 g is released from rest at point along the horizon

Question

A small block of mass m = 230 g is released from rest at point along the horizontal diameter on the inside of a frictionless, hemispherical bowl of radius R = 29.5 cm as shown in the figure below.

(a) Calculate the gravitational potential energy of the block-Earth system when the block is at point relative to point . J

(b) Calculate the kinetic energy of the block at point . J

(c) Calculate its speed at point . m/s

(d) Calculate its kinetic energy when the block is at point . J

(e) Calculate the potential energy when the block is at point . J

Explanation / Answer

a) when at B: gravitational potential energy = -mgR = -0.665 J b) when at B: KE = 0.665J c) when at B : v=2.404m/s d) when at C: KE = 0.2218J e) when at C: potential energy = 0.4433 J

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