For each of the following statements determine whether it is true, false or unde

Question

For each of the following statements determine whether it is true, false or undetermined. True True True False False Your apparent weight is greater than mg when moving in an elevator that is moving upward. In order for an object to travel in a circle, a force must be applied on the object that points away from center of the circle. Water is removed from clothes in a spin dryer in the direction that is tangential to the circle The magnitude of the gravitation force exerted by the Earth on an apple is same as the apple exerts on the Earth An astronaut is weightless in the space shuttle because the astronaut is in zero gravity. Incorrect. Tries 5/10 Previous Tries Submit Answer

Explanation / Answer

1. True

Explanation:Apparent weight is normal reaction applied by lift floor. When lift is accelerating upwards the normal reaction is greater than mg.

2.False

Explanation:Force should be toward the center of circle and =mv2/R

3.True

Explanation: Since the clothes are held by the wall of the spinner they do not move out. The droplets of water can move out in the tangential direction through the clothes and through the holes in the spinner.

4.True

Explanation:According to Newtons 3 rd law of motion two bodies apply equal in magnitude and oppositely directed force on each other.

5.False

Explanation:It is the force of gravity that supplies the centripetal force requirement to allow the inward acceleration that is characteristic of circular motion.The astronauts and all their surroundings the space station with its contents are falling towards the Earth without colliding into it. Their tangential velocity allows them to remain in orbital motion while the force of gravity pulls them inward.

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