A person is standning on the end of a diving board as shown. The diving board is held in place by two supports. The person has a mass of 60 kg. The diving board has a mass of 30 kg. The supports are 1.5m away from eachother. The diving board is 4m long, with the person on the end of the board. Find the force of each of these supports of the diving board.
I Know that the total forces and torque needs to be zero. torque = r*F, but I don't know what needs to go where in the equation
 👍
 👎
 👁
 ℹ️
 🚩
2 answers

To do this problem, you need to know where the two supports are located. Is one of them at the extreme opposite end of the board from where the person is standing?
Write two equations for the force exerted by the two supports. One of them is a force balance:
F1 + F2 = (Mb + Mp)
where Mb = board mass
Mp = person's mass
g = acceleration of gravity
The other equation is a moment balance equation. Although one can calculate the moment about any point and set it equal to zero, the problem will be simpler if you apply it at one of the support points. Then the moment due to one of the support forces will be zero, and you can solve for the other one right away. 👍
 👎
 ℹ️
 🚩
answered by drwls 
you've git this
 👍
 👎
 ℹ️
 🚩
answered by Eskimo74
Answer this Question
Related Questions

physics
Two people carry a heavy electric motor by placing it on a light board 2.00 m long. One person lifts at one end with a force of 400.0 N, and the other lifts at the opposite end with a force of 600.0 N. What is the weight of the motor? and where along the
 asked by Student1

physics
a bullet travelling horizontally at a speed of 350 m/s hits a board perpendicular to the surface, passes through it and emerges on the other side at a speed of 210 m/s . if the board is 4.00 cm thick, how long does the bullet takes to pass through it ?
 asked by nel ervin

Physics
In a classroom demonstration, a 79.2kg physics professor lies on a “bed of nails.” The bed consists of a large number of evenly spaced, relatively sharp nails mounted in a board so that the points extend vertically outward from the board. While the
 asked by Tom

physics
A dart is being thrown at a board that is 3.40 m away. When it hits the board it is 0.784 m below the point where it was aimed and it was thrown at 8.50 m/s. How long was the dart in the air?
 asked by john

physics
the problem reads this "A person with mass m1 = 62 kg stands at the left end of a uniform beam with mass m2 = 93 kg and a length L = 3.5 m. Another person with mass m3 = 65 kg stands on the far right end of the beam and holds a medicine ball with mass m4 =
 asked by Lis

math
A board 5 feet long slides down a wall. At the instant the bottom end is 4 feet from the wall, the other end is moving down the wall at a rate of 2 feet per second. At the moment, how fast is the bottom end sliding along the ground?
 asked by Emily

physics
A student with mass 50 kg jumps off a high diving board.Using 6.0×1024 kg for the mass of the earth, what is the acceleration of the earth toward her as she accelerates toward the earth with an acceleration of 9.8 m/s2 ? Assume that the net force on the
 asked by jasika

math
A division of the Winston Furniture Company manufactures dining tables and chairs. Each table requires 40 board feet of wood and 3 laborhours. Each chair requires 16 board feet of wood and 4 laborhours. The profit for each table is $50, and the profit
 asked by nic

help!!! physics
you want to nail a 1.6 kg board onto the wall of a barn. to position the board before nailing, you push it against the wall with a horizontal force to keep it from sliding to the ground. (a) if the coefficient of static friction between the board and wall
 asked by stephanie

math
Homeroom 101 and Homeroom 102 share a hallway bulletin board. If Homeroom 101 uses 3/5 of their half to display artwork, what fraction of the board is used to display to display Homeroom 101's artwork? Which is correct3/5 x 1/2 , 3/5 divided by 1/2. or
 asked by Angel

PHYSICS
A diver leaves a 3m board on a trajectory that takes her 2.7m above the board and then into the water 2.9m horizontally from the end of the board.At what speed did she leave the board?At what angle did she leave the board?
 asked by PLS HELP!!

Physics
A box rests on a rough board 10.0meters long. When one end of the board is slowly raised to a height of 6.0meters above the other end, the box begins to slide. 1. What is the coeﬃcient of static friction? 2. Once you have claculated the coeﬃcient of
 asked by vanessa

Calculus
A piece of elastic is attached to two nails on a flat board, with a button attached to the midpoint of the elastic. The nails are 5 cm apart. You stretch the elastic by pulling the button along the board in a direction that is perpendicular to the line
 asked by Mishaka

Science
At which position does the diver have the most gravitational potential energy? A.) 1 ( in diving board about to jump off, in a squatting position with hands above head) B.) 2 (In air, just after jumping off. Hands above head) C.) 3 ( About to head into the
 asked by Alice

Physics (Alevel)
A ball was projected horizontally at a speed of 0.52 m s–1 across the top of an inclined board of width 600 mm and length 1200 mm. It reached the bottom of the board 0.9 s later (Figure 4). Calculate: a the distance travelled by the ball across the
 asked by Jeffrey Jones

Math
Michael's father brought him a 16foot board to cut into shelves for his bedroom. Michael plans to cut the board into 11 equal size lengths for his shelves. The saw blade that Michael will use to cut the board will change the length of the board by 0.125
 asked by Maria Sanchez

low math
A section of a boardwalk is made using 15 boards. Each board is 9 1/4 inches wide. The total width of the section is 144 inches. The spacing between each board is equal. What is the width of the spacing between each board? Write your answer in simplest
 asked by Billy

math
please people i need your help. *Equal squares as large as possible are drawn on a rectangular board measuring 50 cm by 70 cm. Find the size of the square. Steve today at 8:18pm assuming you mean to cover the entire board, then since GCD(50,70)=10 The
 asked by kelvin

physics
A diver springs upward with an initial speed of 1.66 m/s from a 3.0m board. (a) Find the velocity with which he strikes the water. [Hint: When the diver reaches the water, his displacement is y = 3.0 m (measured from the board), assuming that the
 asked by tcc

Math
Nadie has a chip board with 4 red chips. She needs to subtract 2 black chips, but there are no black chips on the board. Nadie says, "it is impossible to subtract 2 black chips. There are none on the board "What can Nadine do to the chip board so that she
 asked by Cons
Still need help?
You can ask a new question or browse existing questions.