If the upward force on the lower performer's legs is 3mg (three times her weight), how much do the bones (the femurs) in her upper legs stretch in meters? You may assume each bone is equivalent to a uniform rod 34 cm long and 1.75 cm in radius and the legs are massless, serving only to transmit the upward force on the torso. Her mass is 62 kg and Young's modulus for tension on bones is 1.6 × 1010 N/m2.  ΔL =

Q: A helicopter is using a circular steel cable to lift a m = 2100-kg jeep. The unstretched length of…

A: mass of jeep (m) = 2100 kg Length of cable (L) = 16 m Radius of cable (R) = 0.005 m upwards…

Q: When using a pencil eraser, you exert a vertical force of 8.00 N at a distance of 2.00 cm from the…

A:

Q: A 12m long post is bolted to the wall on its left end. It's right end is held horizontal by a wire…

A: GivenLength of post L = 12 mMass of post m = 13 kgAngle Ѳ =35

Q: During a walk on a rope, a tightrope walker creates a tension of 3.94 × 103 N in a wire that is…

A:

Q: During a circus act, one performer swings upside down hanging from a trapeze holding another, also…

A:

Q: 1. During a circus act, one performer swings upside down hanging from a trapeze holding another,…

A:

Q: Suppose the humerus is reduced uniformly in size by a factor of two. This means that both the length…

A: Here, the amount of the stretch is inferred as the amount of the stress developed in the humerus for…

Q: A glass optical fiber in a communications system has a diameter of 9.0 μm. What maximum tension…

A:

Q: A uniform steel bar of length 10 m is supported at point A and B using two cables as shown in the…

A:

Q: During a circus act, one performer swings upside down hanging from a trapeze while holding another…

A: The expression for the young’s modulus is as follows: Y=F/AΔL/L…

Q: A 2.00-m-long cylindrical steel wire with a cross-sectional diameter of 4.00 mm is placed over a…

A:

Q: A cable is 10.0 m long and has a diameter of 2.00 mm. A force of 45.0 N is applied to the end of the…

A:

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

A: For equilibrium Net torque and net force about center of rotation must be zero. So first we will…

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: During a circus act, one performer swings upside down hanging from a trapeze holding another, also…

A: Given:  mass, m = 60 kg  length, L = 35 cm = 0.35 m  radius, r = 1.8 cm = 0.018 m  Young'smodulus, Y…

Q: A death-defying rock climber is scaling a perfectly vertical section of a mountain wall. She used…

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Q: When using a pencil eraser, you exert a vertical force of 4.00 N at a distance of 2.00 cm from the…

A:

Q: During a circus act, one performer swings upside down hanging from a trapeze while holding another…

A:

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

A:

Q: A toddler weighs 10 kg and raises herself onto tiptoe (on both feet). Her feet are 8 cm long with…

A: The expression of weight of the body is, w=mg Here, m is the mass of the body and g is the…

Q: During a circus act, one performer swings upside down hanging from a trapeze holding another, also…

A:

Q: 2) A student’s head is bent over her physics book. The head weighs P = 24.6 N and is supported by…

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Q: When you bend your knee, the quadriceps muscle is stretched. This increases the tension in the…

A: The figure below shows the free-body diagram of the given situation.

Q: During a circus act, one performer swings upside down hanging from a trapeze holding another, also…

A:

Q: During a circus act, one performer swings upside down hanging from a trapeze holding another, also…

A: The area of cross section can be obtained as A=πr2=π0.0174m2=9.5×10-4 m2

Q: As a part of his daily workout routine, he lifts 10-kg dumbbells on each hand. His hands and…

A: Draw a free-body diagram of the hand.

Q: If it takes 5.30 N to stretch a spring 7 cm, and if the spring is then cut in 9 equal pieces, what…

A:

Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).