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Rigid Body Mechanics · Paper 1 — Free Physics HL Practice Questions

1FoundationMCQLorentz transformation equations1 markPaper 1~2 min

An observer on Earth measures the length of a rocket moving at

0.80c

to be

60 \text{ m}

. What is the proper length of the rocket?

Solutions

2MasteryMCQTorque and rotational motion1 markPaper 1~2 min

A uniform rod of length

L

and mass

M

is pivoted at one end and held stationary at

30°

above the horizontal by a horizontal force applied at the free end. What is the magnitude of the torque due to the weight of the rod about the pivot?

Solutions

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