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- 1. Multiple ChoiceThe easiest way to open a heavy door is by applying the forceNear the hingesIn the middle of the doorAt the edge of the door far from the hingesAt the top of the door
- 2. Multiple ChoiceA 800N man is playing on a seesaw with son who has a weight of 200N. If the child is sitting 3 meters away, how far will the man have to sit to balance the seesaw?0.75m3m1.5m1m
- 3. Multiple ChoiceWhat is the Unit for TorqueNmNWJ
- 4. Multiple Choice
Does a bridge anchored resting on two pillars have any torque?No, it isn't movingYes, but it is at equilibriumYes, but it will soon break because of the torqueNo, Bridges can't have torque - 5. Multiple ChoiceWhen an object is experiencing a net torqueit is in dynamic equilibrium.it is in static equilibrium.it is rotating.it is translating.
- 6. Multiple ChoiceYou apply force to a wrench to tighten a bolt. The wrench breaks in half. Select the best answer for what happens next. Assume the force applied remains constant.The torque is now half of what it was, because torque and distance are inversely proportionalThe torque is now half of what it was, because torque and distance are directly proportionalThe torque is now double of what it was, because torque and distance are inversely proportionalThe torque is now double of what it was, because torque and distance are directly proportional
- 7. Multiple ChoiceIf the torque required to loosen a nut on the wheel of a car has a magnitude of 60.0 N• m, what minimum perpendicular force must be exerted by a mechanic at the end of a 45.0 cm wrench to loosen the nut?.666 Nm133.3 N66.7 N13.3 Nm
- 8. Multiple ChoiceA beam with a length of L is lifted from one end with a force of F1. If the beam doubles in length but contains the same mass, what will the force required to lift it be in terms of F1?F11/2 F12 F11/4 F1
- 9. Multiple ChoiceA construction worker is worried about applying too much torque to a bolt using his wrench. What could he do to reduce his torque on the bolt?Increase the length of the wrenchIncrease the force on wrenchReduce the length of the wrenchReduce the friction between the bolt and wrench
- 10. Multiple Choice
A state of equilibrium is also seen below. Each of the cars weighs the same 9800 N. Despite the fact that there is only one car on the left-hand side that is 9 m from the fulcrum, the torques balance because, the cars on the right-hand side, are ____meters from the fulcrum.
4.5 m
3 m
1 m
2 m
- 11. Multiple ChoiceWhat direction is the torque acting with respect to post A?clockwiseCounter clockwiseNeither DirectionDepends on the mass of the diver
- 12. Multiple Choice
Two masses of mass 10.0 and 6.0 kg are hung from massless strings at the end of a light rod. The rod is virtually weightless. A pivot (fulcrum) is placed off center and the system is free to rotate. If the 6.0 kg mass is 4.0 m away from the pivot, how far away is the 10.0 kg mass if the system is not rotating?
0.42 m
2.4 m
4.8 m
4.2 m
- 13. Multiple Choice
Where should another 4 N force be applied to maximize the net torque on the object?
- 14. Multiple Choice
Where should another 4 N force be applied to place the block in an equilibrium state?
- 15. Multiple Choice
As shown above, a rod with a length L is free to rotate about point A. An external force F is applied perpendicular to the rod. In which of the following cases is the torque on the rod the same as the above?
- 16. Multiple ChoiceA wrench is used to tighten a nut. A 15N perpendicular force is applied 50cm away from the axis of rotation, and moves a distance of 10 cm as it turns. What is the torque applied to the wrench?7.5 Nm1.5 Nm750 Nm150 Nm
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