Which of the following statements about this experiment is FALSE? O You may assu

Question

Which of the following statements about this experiment is FALSE? O You may assume the collision between the bob and the box is completely inelastic. O To make the box move, the pendulum bob should hit close to the bottom of the box during the collision. The initial position for the box should be just touching the pendulum bob when it is hanging straight down. Before each trial one should reshape the bob into something like a ball. 100 Use the figure to answer the rest of the questions. If A = 32 cm and the pendulum bob diameter is 1.2 cm, what is the appropriate height difference magnitude to use for evaluating the change in potential energy of the pendulum bob-earth system?7cm Suppose B = 22 cm. The distance traveled by the box, modeled as a point particle, is: cm Suppose the friction force between the table and the box is 0.24 N and B 22 cm. What is the work done by friction on the box?

Explanation / Answer

b)

Length of the box =60-22=38 cm

point particle of the box =38/2 =19 cm

from initial point to final point =2*19 =38 cm

Total distance travelled =38+22=60 cm

c)

Work done

W=0.24*(-0.6)=-0.144 J (since we are travelling in negative x-direction)

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