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ECAT - Practice Test - Physics - Rotational Motion Quiz

Attempt 10 MCQs on ECAT - Practice Test - Physics - Rotational Motion | Quiz 5

41. For a ladder in equilibrium, which condition must hold?



42. What is the magnitude of torque in terms of angle between r and F?



43. What is the torque when force is applied at the pivot?



44. When is angular momentum conserved?



45. What is the state of rotation in rotational equilibrium?



46. Which reaches bottom first: solid or hollow sphere rolling down incline?



47. A disk (M=2kg, R=0.5m) with ω=4 rad/s. A torque of 2 N·m acts. What is angular acceleration?



48. What is the acceleration of a solid cylinder rolling down a 30° incline? (Assume no slipping)



49. A wheel I=4 kg·m² at 10 rad/s has 8 N·m torque applied for 2 s. What is the work done?



50. Which disk (solid or hollow) has greater rotational KE at same ω?



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