IB Physics HL A 4 3 Hl Unbalanced Torque Questions

Use unbalanced torque to explain angular acceleration, frictional moments and why changing torque prevents constant-angular-acceleration equations.

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Use net torque and rotational dynamics to calculate angular acceleration or deceleration.
Explain how opposing frictional or applied forces produce a net torque and determine the direction of angular acceleration.

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Study A.4.3 (HL)—Unbalanced torque conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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A boat is moved from land to water by rolling it across a set of cylindrical airbags.

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Another way to move a boat down a ramp is to place it on rigid rods. Assume that the same boat is now moved on rods of diameter 1.80 m with the same boat acceleration as before.

Outline how two frictional forces lead to the angular acceleration of the rod.

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IB Physics HL A 4 3 Hl Unbalanced Torque Questions question 1