1. Identify the force acting as the centripetal force when a car circulate
around a flat circular track.
O Friction
Gravitation
Normal
O Tension
2. Identify the force acting as the
centripetal force when a bucket is tied
to a string and swung around in a
circle over your head.
O Friction
Gravitation
Normal
Tension
3. Identify the force acting as the
centripetal force when the earth
orbits the sun
O Friction
Gravitation
Normal
Tension
4. Identify the force acting as the
centripetal force when a matchbox
car drives around a loop-the-loop on
its race car track

A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 5.6 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 10.6-kg slender bar ab.