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Question 4
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Question 4
Question 4
4. In the figure below, a constant force Fapp of magnitude 20 N is applied to a wheel of mass 12 kg and radius 0.4 m. The force is applied at the centre of the wheel. The wheel rolls smoothly without sliding on the horizontal surface from rest, and the acceleration of its centre of mass is 0.50 m/s to the positive x direction. app (a) Calculate the frictional force acting on the wheel. (Hint: apply Newton's 2nd Law) [2 marks] (6) Determine the torque on the wheel. [1 mark] (c) Calculate the rotational inertia of the wheel. [2 marks] (d) Determine the kinetic energy of the wheel when it's angular velocity, o = 2.5rad /s. [3 marks]
4. In the figure below, a constant force Fapp of magnitude 20 N is applied to a wheel of mass 12 kg and radius 0.4 m. The force is applied at the centre of the wheel. The wheel rolls smoothly without sliding on the horizontal surface from rest, and the acceleration of its centre of mass is 0.50 m/s to the positive x direction. app (a) Calculate the frictional force acting on the wheel. (Hint: apply Newton's 2nd Law) [2 marks] (6) Determine the torque on the wheel. [1 mark] (c) Calculate the rotational inertia of the wheel. [2 marks] (d) Determine the kinetic energy of the wheel when it's angular velocity, o = 2.5rad /s. [3 marks]
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