A see-saw consists of a uniform board with mass 43.6kg and length l = 2.01m. It supports two friends who are at rest with masses mj= 45.4kg and m2 =46.4kg as shown in the figure. If Friend 1 sits at a distance of l/2 from the pivot point, where must Friend 2 sit in order to balance the see-saw? (Include the SI unit in your answer.)

A see-saw consists of a uniform board with mass 43.6kg and length l = 2.01m. It supports two friends who are at rest with masses mj= 45.4kg and m2 =46.4kg as shown in the figure. If Friend 1 sits at a distance of l/2 from the pivot point, where must Friend 2 sit in order to balance the see-saw? (Include the SI unit in your answer.)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

Fy Ex The plant in the picture has mass of 30 kg, and is hanging at a distance of 1.8 meters from the wall. The horizontal rod has mass of 7.8 kg. Assume that its weight is evenly distributed, therefore it can be treated as a single force at the center of mass. The rod is 2 meters long, and there is a cable at a 38° angle supporting it at the end. Using the wall as the axis of rotation, find the magnitude of the downward torque, from both the weight of the rod and the weight of the plant.
D1 Sign D2 A 2.40kg pole is attached to a wall with a hinge as shown. A 5.50kg sign is suspended at the other end of a pole, where D2 = 3.50m. A cable attached to the wall forms an angle a = 14.0° with the wall, and is attached to the pole a distance D = 1.60m from the hinge. Assume the origin is at the hinge. What is the torque on the pole due to the weight of the sign? 183 Nm
Consider a teeter-totter that is made out of pine, shown below. A pineapple sits on one side of the teeter-totter, a distance 1.09 m from the pivot point, while an apple (non-pine) sits on the other side, a distance of 2.63 m from the pivot. If the pineapple has a mass 132 g, what must the mass of the apple be in order to balance the teeter-totter (i.e. to maintain rotational equilibrium)? [Answer in units of grams (g) with 3 sig figs but do not enter units with your answer]
Review Conceptual Example 7 before starting this problem. A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 462 N walk on the overhanging part of the plank before it just begins to tip? 41.1 ma
Computation A 6-kg bowling ball rests on a uniform beam of length L and mass M, as in the figure. The beam is supported at two points separated by a distance BL where ß = 0.59 and the bowling ball is a distance d from support point 1. Find the largest distance dmax such that the beam does not tip if M = 17 kg and L = 4.9 m. [Note: To keep the bowling ball on the beam, report an answer of dmax ≤ L. For some values, a correct calculation gives dmax > L. That means the bowling ball can be placed anywhere on the beam without tipping and, in that case, the correct answer is dmax = L = 4.9 m.) 2 dmax m L BL- d M Report your numerical answer below, assuming three significant figures. Remember to include a "-" as necessary. O Search 1
The angle between the beam and the floor is 15.0 degrees. The angle between the rope and the horizontal is 31.0 degrees. The beam is 4.10-m long and has a mass of 6.10 kg. The box sits a distance of d = 0.770 m from the upper end of the beam and has a mass of 9.60 kg.What is the torque due only to the weight of the box if the axis is at the hinge?
A door is 0.91 m wide, 2.0 m high, and 4.0 cm thick. A "door closer" is attached to the door and the top of the door frame. When the door is open and at rest, the door closer exerts a torque of 8.2 Nm. What is the least force you need to apply to the door to keep it open?
B4
Consider a teeter-totter that is made out of pine, shown below. A pineapple sits on one side of the teeter-totter, a distance 1.38 m from the pivot point, while an apple (non-pine) sits on the other side, a distance of 2.65 m from the pivot. If the pineapple has a mass 125 g, what must the mass of the apple be in order to balance the teeter-totter (i.e. to maintain rotational equilibrium)? [Answer in units of grams (g) with 3 sig figs but do not enter units with your answer]
Three children are trying to balance on a seesaw. The seesaw is 3.7 m long and pivots about a rock at its center. Louie and Laura are already sitting on opposite ends. If Martha weighs 29 kg, where should she sit so as to balance the seesaw?
Three children are trying to balance on a seesaw. The seesaw is 4.1 m long and pivots about a rock at its center. Louie and Laura are already sitting on opposite ends. If Martha weighs 33 kg, where should she sit so as to balance the seesaw?
A playground merry-go-round, made in the shape of a solid disk, has a diameter of 2.50 m and a mass of 350.0 kg. Two children, each of mass 30.0 kg, sit on opposite sides at the edge of the platform. Approximate the children as point masses. What torque is required to bring the merry-go-round from rest to 28.0 rev/min in 23.0 s?