An old carpenter’s trick to keep nails from bending when they are pounded into hard materials is to grip the center of the nail firmly with pliers. Why does this help?

Q: Bob and Steve are building a see-saw and want it to balance when they both sit on the ends, but Bob…

A: Given : Weight of Bob is twice as Steve  Find : Where would the fulcrum have to be positioned for…

Q: With the shoulder flexed at 30 degrees, the moment arm of the deltoid muscle is 1.8 cm. Solve for…

A: Given: shoulder is flexed at an angle, θ=30° moment arm of deltoid muscle, 1.8 cm=0.018 m Weight of…

Q: A person bending forward to lift a load “with his back”(Fig. P8.23a) rather than “with his knees”…

A: Given data:W1 = 200 NW2 = 350 N

Q: The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle…

A: By Balancing torque about elbow joint

Q: What three factors affect the torque created by a force relative to a specific pivot point?

A: we know that torque is the cross product of force and the perpendicular distance. Mathematically,…

Q: A 5.4 kgkg cat and a 2.5 kgkg bowl of tuna fish are at opposite ends of the 4.0-mm-long seesaw. How…

A: Given: m1= 5.4 kg  m3 = 2.5 kg  L = 4m  m2 = 3.8 kg

Q: A child with a mass of 25 kg sits at a distance of 1.8 m from the pivot of a seesaw. Calculate a.…

A:

Q: Which of the following is needed for a rigid body to be in equilibrium? (A) It must be stable. (B)…

A: When a rigid body is in equilibrium, then it does not have angular acceleration or linear…

Q: When you apply the torque equation ET = 0 to an object in equilibrium, the axis about which torques…

A: Given,  An object is in rotational equilibrium

Q: Suppose a 900-kg car is on the bridge in Figure shown with its center of mass halfway between the…

A: Here, mass of the bridge =2500kg Net torque is zero at the left hinge. Torque due to the weight of…

Q: 37 Fy- 160 N 42 1.0 m 34 A uniform 15 kg pipe of length 5.0 m has a 160 N force applied 4.0 m from…

A:

Q: A 56 kg woman stands on a very light, rigid board that rests on a bathroom scale at each end, as…

A: Given,

Q: A 40 kg, 5.0-m-long beam is supported by, but not attached to, the two posts as shown. A 20 kg boy…

A:

Q: A large wood beam weighing 800 N is supported by two posts as shown. If an unthinking man weighing…

A: Given, large wood beam weighs 800 N supported by two rods Man weighing 700 N walks from A to right…

Q: The uniform seesaw shown below is balanced on a fulcrum located 3.0 m from the left end. The smaller…

A:

Q: In exercise physiology studies, it is sometimes important to determine the location of a person's…

A: Consider that there are three forces at the location of the center of gravity. The balancing forces…

Q: A 0.120 kg, 50.0-cm-long uniform bar has a small 0.055 kg mass glued to its left end and a small…

A: Given: Mass of the bar = 0.120 Kg Length of the bar = 50 cm Mass at the other end = 0.110 Kg

Q: ard 20 cm x 10 cm has a mass of 200 g. Masses of 50 and 80 g are attached at two corners at the ends…

A: Given values:- Dimension of uniform board,(L)=20 cm x 10 cm -----(1) Mass of uniform board,(M)=200…

Q: A uniform beam of length 1.0 m and mass 10 kg is attached to a wall by a cable, as shown. The beam…

A: Rotational Equilibrium: Here, the torque due to the weight of the beam about the pivot at the point…

Q: The 64-kg man with center of mass G supports the 28-kg drum as shown. Find the greatest distance x…

A: The data given is as follows: 1. Mass of man, mm=64 kg 2. Mass of drum, md=28 kg 3. Coefficient of…

Q: An irregularly shaped object 10 m long is placed with each end on a scale. If the scale on the right…

A:

Q: Two children hold opposite ends of a lightweight, 1.8-m-long horizontal pole with a water bucket…

A:

Q: The foot of a ladder rests against a wall and its top is held by a tie rope, as shown. The ladder…

A: The free-body diagram is

Q: 50 N force is applied at a 40° angle to a door 0.6 meters from the door hinge. Determine the torque…

A: Given:Force F=50Ndisplacement r=0.6mangle θ=40°To find:Torque T=??

Q: A b. A vaulter holds a 29.4 -N pole in equilibrium by exerting an upward force U with her leading…

A:

Q: under what circumstances is it not necessary to consider torque in an equilibrium problem?

A: If no force acts on a body, then the body does not start spinning. If two or more forces are put at…

Q: A horse weights 5000 Newtons. The distance between the front and rear hooves is L1= 1.8 meters and…

A: The torque (τ) about the rotation axis is given by the product of the perpendicular force (F) that…

Q: F= 330 N 55° 1.5

A:

Q: When opening a door, you push on it perpendicularly with a force of 48 N at a distance of 1.2m from…

A:

Q: A door has a width of 1 m. The hinge attaches the door on the left. Andrea pushes on the right end…

A:

Q: You place a 15 kg brick 0.5 m to the left of the fulcrum. Where on the right side would you place a…

A: Given data:  Mass on left side (m1) = 15 kg Distance from fulcrum (r1) = 0.5 m Mass on right side…

Q: A man is attempting to raise a 7.5-m-long, 28 kg flagpole that has a hinge at the base by pulling on…

A:

Q: 00 With the shoulder flexed at 30°, the moment arm of the deltoid muscle is 2.0 cm. Solve for the…

A: Given,  Weight of humerus = 48N Shoulder is flexed at 30 degree Moment arm of the deltoid muscle is…

Q: A 700 N bear is standing on a metal plank supported by the cable shown in the figure. At the end of…

A:

Q: Kendra holds the end of a rope that is .5 kilograms and .60 meters long, while her friend Lupita…

A: We are allowed to give the explanation of first question only which is given below.  Please repost…

Q: What is the horizontal distance of the center of gravity of the person-ladder system from the point…

A:

Q: Why is it possible to drive a nail into a piece of wood with a hammer, but it is not possible to…

A: Hammers are very hard and strong, and when you strike with the hammer on the nail tip, the blow's…

Q: For the system to be in equilibrium the sum all the clockwise moments acting on the system must be…

A: Clock wise moment must be equal to anti Clockwise moment for the sytem to be in equilibrium.For the…

Q: In exercise physiology studies, it is sometimes important to determine the location of a person’s…

A:

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.