A man and a child sit on a seesaw, as shown in the diagram. The seesaw consists of a plank with negligible mass resting on a fulcrum. The child is 1.25 meters from the fulcrum and the man is 0.5 meters from the fulcrum. The system is in static equilibrium. If the mass of the man is 75 kg, what must the mass of the child be? O 25 kg • 30 kg O 50 kg O 20 kg O 187.5 kg

A man and a child sit on a seesaw, as shown in the diagram. The seesaw consists of a plank with negligible mass resting on a fulcrum. The child is 1.25 meters from the fulcrum and the man is 0.5 meters from the fulcrum. The system is in static equilibrium. If the mass of the man is 75 kg, what must the mass of the child be? O 25 kg • 30 kg O 50 kg O 20 kg O 187.5 kg

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter12: Static Equilibrium And Elasticity

Section: Chapter Questions

Problem 37P: To get up on the roof, a person (mass 70.0 kg) places 6.00-m aluminum ladder (mass 10.0 kg) against...

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To get up on the roof, a person (mass 70.0 kg) places 6.00-m aluminum ladder (mass 10.0 kg) against the house on a concrete pad with the base of ladder 2.00 m from the house. The ladder rests against a plastic rain gutter, which we can assume to frictionless. The center of ladder is 2.00 m from the bottom. The person is standing 3.00 m from the bottom. Find the normal reaction and friction forces on the ladder at its base.
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Billy and Timmy are using a ramp to load furniture into a truck. While rolling a 250-pound piano up the ramp, they discover that the truck is too full of other furniture for the piano to fit.Timmy holds the piano in place on the ramp 20 o while Billy repositions other items to make room for it in the truck.If the angle of inclination of the ramp is how many pounds of force must Timmy exert to hold the piano in position?
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The bear of weight 700 N walking on the horizontal beam pivoted at point A and supported by a rope at an angle 60∘ on point B. The bear wants to reach a basket full of honey. The basket weighs 80 N. The honey basket weighs 200 N, and the beam length 6 m. When the bear in at ? = 1 m, a. Find the tension of the rope supporting the beam. b. What is the component of the forces exerted on the wall (point A)?
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