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- 1. Multiple ChoiceIf the moment required to loosen a nut on the wheel of a car has a magnitude of 60.0 Nm, 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
- 2. Multiple ChoiceFind the magnitude of the moment produced by a 5.0 N force applied to a door, at a perpendicular distance of 65 cm from the hinge.75 Nm3.25 Nm6.3 Nm8.75 Nm
- 3. Multiple Choice
What is the distance of the 14 kg mass on the right from the pivot, if it balances with the two masses on the left? (3 kg mass is 65 cm from pivot, 10 kg mass is 35 cm from pivot).0.65 m0.56 m0.79 m0.39 m - 4. Multiple ChoiceYou apply your maximum force to a wrench to tighten a bolt. Unfortunately, the wrench breaks exactly in half. You continue to try to use the shortened wrench to tighten the bolt. Which sentence is correct?The moment is halved, because max distance from pivot is halved.The moment is halved, because force is halved.The moment is doubled, because the max distance from pivot is halved.The moment is doubled, because the force is halved.
- 5. Multiple ChoiceA seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?The larger person moving further away from the center.Moving the smaller person closer to the center.Moving the smaller person further from the center.Making the larger person do nothing.
- 6. Multiple ChoiceA wrench is used to tighten a nut. A 15 N perpendicular force is applied 50 cm away from the axis of rotation, and moves a distance of 10 cm as it turns. What is the turning effect of the force applied to the wrench?7.5 Nm1.5 Nm750 Nm150 Nm
- 7. Multiple ChoiceThe least force is required to open a heavy door is by applying the forceNear the hingesIn the middle of the doorAt the edge of the door furthest from the hingesAt the top of the door
- 8. Multiple ChoiceA 800 N man is playing on a seesaw with his son who has a weight of 200 N. If the child is sitting 3 meters away from the fulcrum, how far will the man have to sit from the fulcrum to balance the seesaw in equilibrium?0.75m3m1.5m1m
- 9. Multiple ChoiceWhat is the unit for moment of a force?NmNWJ
- 10. Multiple ChoiceIn the diagram above, two masses, one with mass m, the other with mass M = 2m are resting on a uniform plank of length L that pivots at its midpoint. If the mass m is at the far end of the plank, how far away from the pivot should the mass M be to balance the plank in a horizontal position shown?L/2L/3L/4L/6
- 11. Multiple ChoiceWhen an object is experiencing a net turning effect of a force,it is in dynamic equilibrium.it is in static equilibrium.it is rotating.it is translating.
- 12. Multiple ChoiceIf a force of magnitude F can be applied in four different 2-D configurations (P,Q,R, & S), select the cases resulting in the maximum and minimum turning effects on the nut. Answer in order of (Max, Min).(Q, P)(P, R)(R, S)(Q, S)
- 13. Multiple ChoiceWhat is the net moment of the two forces about point P?20 Nm clockwise20 Nm anti-clockwise40 Nm clockwise40 Nm anti-clockwise
- 14. Multiple ChoiceA lever is used to raised a mass with a weight of 12 Newtons, using only 4 Newtons of force. The distance of the load from the fulcrum is 1 metre. What is the distance of the force from the fulcrum?0.333 m1 m3 m36 m
- 15. Multiple ChoiceWhat is the moment acting on the seesaw?1.6 Nm15 Nm16 Nm4 Nm
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