Using the information from Paul Hewitt's Conceptual Development Practice Page 25-1 and the image below, answer the following que
1 answer:
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Answer:
a
b
Explanation:
From the question we are told that
The child's weight is
The length of the sliding surface of the playground is
The coefficient of friction is
The angle is
The initial speed is
Generally the normal force acting on the child is mathematically represented as
=>
Note
Generally the frictional force between the slide and the child is
Generally the resultant force acting on the child due to her weight and the frictional force is mathematically represented as
Here F is the resultant force and it is represented as
=>
=>
=>
=>
So
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Generally the heat energy generated by the frictional force which equivalent tot the workdone by the frictional force is mathematically represented as
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=>
Generally from kinematic equation we have that
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=>
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When a force causes a body to move, work is done on the object by the force. Work is the measure of the energy transfer when a force 'F' moves an object through a distance 'd'. So we say that energy is transferred from one energy store to another when work is done, and therefore, energy transferred = work done.