You can probably stand flatfooted on the floor and then rise up and balance on your tiptoes. Why are you unable do it if your toes are touching the wall of your room?

Q: In checking a recently installed fencepost for adequacy of the ground support, a person exerts a…

A: GIVEN: The height of point P from y-z plane=-180 unit The height of point P from x-z plane=60 unit…

Q: The patellar tendon attaches to the tibia at the tibial tuberosity at a perpendicular distance of…

A: According to the condition of equilibrium, the total torque or moment about the pivot point is zero.…

Q: The 3 m long uniform plank is supported by a fulcrum at the midpoint. Where should a 45 kg student…

A: Given: The mass of the student is 45 kg. The length of the plank is 3 m. The free-body diagram is…

Q: You can find the center of gravity of a meter stick by resting it horizontally on your two index…

A:

Q: When a gymnast weighing 740 N executes the iron cross as in figure (a), the primary muscles involved…

A: Write the forces and their components.

Q: African elephants are the largest land animals. They consume approximately 10% of their body weight…

A: Given:mass, m = 4540 kgposition magnitude from axis to−hind foot,rfs = 133 cm = 1.33 mtrunk, rT =…

Q: Stand with your heels and back against a wall and try to bend over and touch your toes. You’ll find…

A: The COG (center of gravity) is the point on the body about which the body’s entire weight acts.

Q: Why can’t you put your heels firmly against a wall and then bend over without falling?

A: When a person put heels firmly against a wall and then bend in the forward direction, the person…

Q: You have a summer job working downtown washing windows on skyscrapers (the pay is great and so are…

A:

Q: An 85 kg window cleaner uses a 10 kg ladder that is 5.3 m long. He places one end on the ground 3.2…

A: a)The required force on the window from the ladder is,

Q: Stand with your heels and back against a wall and try to bend over and touch your toes. You’ll find…

A: In order to stand with heels and back against the wall and then try to bend over and touch the toes,…

Q: In checking a recently installed fencepost for adequacy of the ground support, a person exerts a…

A: Given: A Person exerts a force on the top of the post is

Q: when one boy is sitting 1.2 m from the center of a see-saw, another boy must sit on the other side…

A:

Q: A ladder, leaning against a wall, makes a 60° angle with theground. When is it more likely to slip:…

A: Free body diagram:

Q: A ladder leans against a wall 5 meters above the ground so a homeowner can clear his gutters of…

A: Solution:-

Q: You can find the center of gravity of a long ruler by resting it horizontally on your two index…

A:

Q: A 100 – g uniform meterstick is hanged on a 40 cm mark, you try to achieve balance by placing a 100…

A:

Q: Stand straight with your heels, back, and head against a wall. Bend forward from your waist, keeping…

A:

Q: A 65 kg person is standing on a 25 kg wood board as shown. How far can they go past the left support…

A: Mass of board = 25kgMass of person = 65kgLength of board = 5.5m

Q: Shoulder joint F, 4.00 cm 70.0 cm F 45.0°! © Ed Bock/Surf/Corbis

A:

Q: A 75 kg window cleaner uses a 10 kg ladder that is 5.0 m long. He places one end on the ground 2.5 m…

A:

Q: A ladder leans against a wall 5 meters above the ground so a homeowner can clear his gutters of…

A: Consider the free-body diagram of the ladder of weight w as follows.

Q: A 10.0-kg monkey climbs auniform ladder with weight w =1.20 x 102 N and length L =3.00 mas shown in…

A: (a)The free body diagram of a body shows all the forces acting on the body as well as the reaction…

Q: Consider a ladder on a horizontal floor and leaning against a vertical wall. Which of the following…

A:

Q: A woman wearing a stiletto heel shoes (heel pointed shoes) gets tired and will feel pain in her legs…

A: Pressure = Force / area If area is small pressure is very high for same amount of force.