Which of the following statements correctly describe torque? The largest torque that can be provided to a lever arm is when the force is applied at an angle of 180°. Net torque is a conserved quantity. Angular momentum is a conserved quantity. A longer lever arm will result in more torque being applied to the center pivot. An empty soup can rolled down the same incline as a full soup can will reach the bottom first. Applying a torque to rotate an object will always result in an acceleration.

3m 5m 2. Compute the sum of the torques about point A. -60N -SON 70N -4ON -7ON 3. Compute the sum of the torques about point A. -60N Am 9m 4. Compute the sum of the torques about point A. -30N -90N 40N 9m 3m 5. Compute the sum of the torques about point A. -30N 3m 40N 8ON 9m

A grindstone in the shape of a solid disk with diameter 0.520 m and a mass of 50.0 kg is rotating at 850 rev/min. You press an axe against the rim with a normal force of 160 N (see Figure below), and the grindstone comes to rest in 7.50 s. 1) What is the moment of inertia of the grindstone? 2) What force is bringing the grindstone to a stop?  What is the net torque caused by that force? 3) What is the size of the force? 4) What is the coefficient of friction between the axe and the grindstone?

17. A tennis player's elbow is fully extended during impact with the ball. This is beneficial compared to a partially bent elbow because. the torque due to gravity will be increased i the linear velocity of the racquet head will be higher as long as the angular velocity is also high the coefficient of restitution will be greater the angular inertia of the racquet will be decreased allowing for a greater angular acceleration 18. A large spin is put on a jump serve in volleyball to accelerate the ball downwards once it passes the net. The topspin can be maximized by creating a greater torque with a force on the bottom of the ball contact the ball at a greater height from the ground hit with a greater force directed through the It's center generating a large torque onto the ball with frictional forces during contact