quiz7asoln - NAME: Quiz #7a: Phys270 Solution Section 0102...

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NAME: Solution _____________________________ Quiz #7a: Phys270 Section 0102 [ 10 pts]A 2m long cow is running at relativistic velocity towards a 1m long shed. [5 pts] From the cow’s reference frame, is it possible for the cow to ±t inside the barn? If so, what minimum speed must the cow be moving? [leave your answer in terms of the speed of light c] The actual length of the barn is = 1m (in its own frame where it is at rest) In the Cow's reference frame the barn seems to move towards itself. Therfore the cow sees the length of the barn contracted => less than 1m Hence it is NOT possible for the cow to ±t in the barn in its own reference frame. [5 pts] From the barn’s reference frame, is it possible for the cow to ±t inside the barn? If so, what minimum speed must the cow be moving? [leave your answer in terms of the speed of light c] From the barns reference frame the cow is running and hence it kength seems contracted L< 2m. Therefore if the cow is moving with suf±cient velocity such that it's length appears to be L<=1.0m then it might seem
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quiz7asoln - NAME: Quiz #7a: Phys270 Solution Section 0102...

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