Answer whether the following statements are true or false; e.g., if the first is

Question

Answer whether the following statements are true or false; e.g., if the first is true and the rest are false, enter TFFFFF. Assume all ropes are massless and cannot stretch i. A man sits on top of a suitcase, which is sitting on the floor. The magnitude of the normal force of the floor on the suitcase is equal to the magnitude of the weight of the suitcase minus the magnitude of the weight of the man. ii. The magnitude of the normal force acting on an object is always equal to the weight of the object. iii. A gymnast is sliding down a vertical rope attached to the ceiling. Her speed is increasing. The magnitude of the tension in the rope is greater than the magnitude of the gymnast's weight. A man pulls up on the handle of a suitcase that is sitting on the floor, but he is unable to lift it. While he is pulling, the magnitude of the normal force of the floor on the suitcase is equal to the weight of the suitcase. A bucket of water hanging from a vertical rope is being lowered at a constant speed. The magnitude of the tension in the rope is greater than the magnitude of the weight of the bucket of water. iv. v. increasing. The free body diagram for the gymnast is correct.

Explanation / Answer

i) False. normal force on suitcase = weight of suitcase + weight of man

ii)True

iii)False. The tension is less than weight since she is sliding down so she requires less friction.

iv)True.

v)False. Tension = weight since moving at constant speed ,no acceleration.

vi)True

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