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Science Clinic => Physics => Topic started by: dmcintosh on Aug 1, 2020

Title: A large spring is used to stop the cars after they come down the last hill of a roller coaster. The ...
Post by: dmcintosh on Aug 1, 2020

Question 1

A champion athlete can produce one horsepower (746 W) for a short period of time. The number of 16 cm high steps a 70 kg athlete could ascend in one minute while expending one horsepower is

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4.

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7.

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65.

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408.

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4 567.

Question 2

A large spring is used to stop the cars after they come down the last hill of a roller coaster. The cars start at rest at the top of the hill and are caught by a mechanism at the instant their velocities at the bottom are zero. Compare the compression of the spring, x_A, for a fully loaded car with that, x_B, for a lightly loaded car when m_A = 2m_B.

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x_A = x_B.

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x_A = x_B.

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x_A = x_B.

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x_A = 2 x_B.

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x_A = 4 x_B.

Title: A large spring is used to stop the cars after they come down the last hill of a roller coaster. The ...
Post by: Carliemb17 on Aug 1, 2020

Answer 1

408.

Answer 2

x_A = x_B.

Title: Re: A large spring is used to stop the cars after they come down the last hill of a roller coaster.
Post by: Student69 on Oct 9, 2023

Thank you