A wooden plank rests on two soup cans laid on their sides. Each can has a diamet

Question

A wooden plank rests on two soup cans laid on their sides. Each can has a diameter of 6.2 cm , and the plank is 3.0 m long. Initially, one can is placed 1.0 m inward from either end of the plank, as the figure shows. The plank is now pulled 1.0 m to the right, and the cans roll without slipping.

A)

How far does the center of each can move?

Express your answer using two significant figures.

FOR PART A I GOT THIS ANSWER UNDER:

0.50

B)

How many rotations does each can make?

Express your answer using two significant figures.

0.50

Explanation / Answer

A) As the plank is pulled the can rolls. The displacement of the can at the floor is equal to the displacement of the can against the plank, so the translational distance is 0.5 m.

B) The number of rotations = 0.5/(*d) = 2.567 revs (using d=6.2 cm)

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