als the weight of the object.
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An object is hanging by a string from the ceiling of an elevator. The elevator is moning up at constant speed. What is the tension in the string?
Which answer is corect abd why?
A. Zero.
b. exactly equals the weight of the object.
c. greater than the weight of the object.
d. less than the weight of the object.
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- This is the upward force exerted to the object. O A. friction O B. weight O C. tension O D. normal forceThe direction of the frictional force is а. same direction of the intended motion b. perpendicular to the direction of the intended motion c. opposite direction of the intended motion d. along the x-directionA 1000N cow is sitting in the grass.a. What is the cow’s mass?b. What is the cow’s weight?c. What is the normal force acting on the cow?
- You’re pushing a heavy filing cabinet across your office. You are tiring quickly and the cabinet is slowing down. The force that you exert on the cabinet is ______ the force that the cabinet exerts on you.A. greater than B. less than C. equal toIf you push sideways gently on your textbook and it doesn’t move, it is most likely because a. the book’s mass is large enough to resist your push. b. your push is too small to overcome the book’s inertia. c. friction is pushing on the book in the opposite direction as your push. d. None of the above.1. A pair of crates are in contact with one another on a horizontal frictionless surface. The first crate has a mass of 3.0kg, while the second has a mass of 12kg. You push on the 3.0-kg crate to the right with a force of 60N, causing it to press against the second crate and move them both. What is the acceleration of each crate? What is the force that the lighter crate exerts on the heavier crate as it presses against it?
- If the angle of slope is 0 degree with the horizontal, the normal force will be a. Equal to body weight O b. Zero c. More than body weight O d. less than body weightThe tension on the string is: a.greatest in I b.greatest in III c.least in I d.least in III e.greatest in IIGive the weight of the following objects: a. An object with a mass of 5kg b. An object with a mass of 15kg c. An object with a mass of 15kg on the moon, where g=1.6
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