Question

Asked Nov 22, 2019

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A block of mass *m* = 5.50 kg is released from rest from point and slides on the frictionless track shown in the figure below. (Let *h _{a}* = 6.30 m.)

An illustration shows a wavy track, starting from a crest, moving to a trough, then again to a crest and trough, and finally to a crest that then moves downward. Three points in the track are highlighted, A, B, and C. Point A is at the top of the track where an object of mass *m* is placed ready to get released. It is at the height labeled *h*_{a} from the ground. Point B is shown at the next crest and is at a height of 3.20 meters from the ground. Point C is shown at the following trough and is at a height of 2.00 meters from the ground.

(a) Determine the block's speed at points and .

(b) Determine the net work done by the gravitational force on the block as it moves from point to point .

J

v_{B} |
= m/s |

v_{C} |
= m/s |

(b) Determine the net work done by the gravitational force on the block as it moves from point to point .

J

Step 1

a)

From the conservation of energy at point A and B,

Step 2

Again, from conservation of en...

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