The next 5 questions refer to this scenario: David is attempting to hit Goliath with a stone. David’s stone has a mass of 0.250 kg and he is swinging it around his head in a horizontal circle with an angular velocity of 20.0 rad/s. (r = 0.50m). Image Description Simple drawing of David and Goliath. David is whirling the slingshot around his head, with evenly spaced points labeled on the circle: a is above David’s head, B halfway to horizontal, c is to the right of David’s head, D is halfway to vertical, E is under David’s arm. “r” indicates the radius of the circle.

At the moment the ball is passing through its equilibrium position at the bottom of its swing, what do we know about the relationship between the tension in the cable, T, and the weight of the ball, W?

If the strings on the sling slip a little in David’s hands, so that the radius of the circular orbit becomes greater, what happens to the moment of inertia of the stone in its motion?

The direction of the acceleration of the block, when in position III (after leaving the ramp), is best represented by which of the arrows in the diagram?

Which puck will have the greater momentum upon reaching the finish line?

Suppose the same rocket is reloaded with fuel, and launched from a spaceship that is far away from any planets or stars. What happens to the rocket in this case after it has burned all of its fuel?

A person holds the handle at its end, supporting the bucket. The force exerted by the person is equal to

The next 5 questions refer to this scenario: A 10.0 kg box, starting at rest slides down an incline. The first segment is 10.0 m long, inclined at an angle of 45º to the horizontal. The second segment is 15.0 m long, inclined at an angle of 30º to the horizontal. Along each segment, the coefficient of friction is 0.10. Note that: sin(30º) = 0.500 sin(45º) = 0.707 cos(30º) = 0.866 cos(45º) =0.707 Image Description Drawing of a left diagonal line with a bend in it. The first segment is 10.0m which is 45 degrees from horizontal. The continued next segment is 15.0m which is 30 degrees from horizontal.

If the price of lumber rises, then, in the market for sawdust,

Demand is price elastic if a