Torque and rotational inertia
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- A person exerts a force of 45N on the handle of a door 65cm wide.
- Calculate the net torque about the axle of the of the wheel shown below. Assume that a friction torque of 0.60 opposes the motion.
- A torque of 66 is required to tighten the bolts on the cylinder head of a car engine. The wrench used to tighten the bolt is 26cm long.
- Two small weights of mass 4.0kg and 6.0kg are mounted 6.0m apart on a light rod as shown below. Calculate the moment of inertia of the system;
- A 12.0N force is applied to a cord wrapped around a pulley of mass = 6.00kg and radius = 22.0cm. The pulley accelerates uniformly from rest to an angular speed of 40.0 rad/s in 2.00s. If there is a frictional torques = 1.20 at the axle, determine the moment of inertia of the pulley as it rotates around its center.
- Determine the moment of inertia for the following uniform objects:
- An Atwood's machine consists of two masses, = 4.0kg and = 7.0kg, which are connected by a massless inelastic cord that passes over a pulley. The pulley has radius = 0.4m and moment of inertia =4.0 kg.
about its axle.