A man stands on his toes by exerting an upward force through the Achilles tendon, as in the figure. Calculate the force in the Achilles tendon if he stands on one foot and has a mass of 80kg.

Q: A tightrope walker stands on a wire that is supported by a pole at each end. The tightrope walker…

A: Given that the tension in wire is3.42×103 N, and it makes an angle of 6.2°. The young’s modulus of…

Q: Q3. In the figure below, one end of the uniform beam of mass 50 kg is hinged to a wall. The other…

A: Given:-               Beam mass = m = 50 kg                   Box mass = m' = 10 kg…

Q: A 3 m long light (massless) board is supported at each end by cables. A painter weighing 900N stands…

A: We need to calculate tension in both the cables holding the light board.

Q: The simply supported beam in Figure Q2a is in equilibrium and the reaction force RA is 9.92 N.…

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Q: A 75-kg man stands on his toes by exerting an upward force through the Achilles tendon, as shown.…

A: According to the first condition of equilibrium, net force on system is zero and also with the…

Q: You hold a softball with a weight of 1.80 N in your hand as shown in the figure. Your arm is moving,…

A: The net torque acting on the elbow is the sum of the torque acting on biceps, hand and the…

Q: A 3.0-m-long rigid beam with a mass 140 kg is supported at each end. An 85 kg student stands 2.0 m…

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Q: A hungry bear weighing 735 N walks out on a beam in an attempt to retrieve a basket of goodies…

A:

Q: In an isometric exercise a person places a hand on a scale and pushes vertically downward, keeping…

A:

Q: The figure below shows a horizontal bar, of length 4.2 m, with forces acting on it. A 30 N force…

A: ...

Q: The figure shows a model of a crane that may be mounted on a truck. A rigid uniform horizontal bar…

A:

Q: the long stick with a length(L) and mass(m) supports M. the stick is supported by both tension and…

A: When a body in the system undergoes various forces , the forces need to be balanced in order to…

Q: A hungry bear weighing 730 N walks out on a beam in an attempt to retrieve a basket of goodies…

A: Given: Weight of the bear, MB = 730 N Weight of the beam, Mb = 200 N Length of the beam, l = 7 m…

Q: multiple choice) Muscles of the human body must pull several hundred Newtons of force to effect…

A: Muscles have very small cross section areas  And torque is force x distance

Q: In the figure shown, if the weight of the beam is 300 N. What is the force exerted by the beam on…

A: Given that W= 300 N The force exerted on the beam at  leg A is equal to normal reaction (N) on The…

Q: The drawing shows a rectangular piece of wood. The forces applied to corners B and D have the same…

A: Let us consider the third force as S. Also let us consider anti-clockwise direction as positive.…

Q: A 27.8 ft long board, whose weight is 14.9 lbs, is supported from below on each end.  A 244.4 lb…

A: FBD

Q: The arm shown in the figure 5. supports a 4kg sphere. The mass of the hand and forearm together is…

A:

Q: A spade is modelled as a uniform rod, of mass 2kg and length 90cm, attached to a uniform square…

A: The gardener is holding the spade horizontally. according to the question, weight of spade = force…

Q: The upper leg muscle (quadriceps) exerts a force of FQ = 1140 N, which is carried by a tendon over…

A: It is given that,

Q: As shown in the figure below, the upper leg muscle (quadriceps) exerts a force which is carried by a…

A: Given that:Fo=2000 N

Q: A uniform pole 20 feet long and weighing 80 lbs is supported by a boy 2 feet from end A and a man 5…

A: Since the pole and the load is supported by the boy and the man, the system is in rotational…

Q: A 50 N hand and forearm are held at a 35° angle to the vertically oriented humerus. The CG of the…

A: In the given question We have to determine the force must the forearm flexors exert if a 50 N weight…

Q: A 11.0-kg monkey climbs a uniform ladder with weight w = 1.40 x 102 N and length L = 2.60 m as shown…

A:

Q: A uniform ladder 8m long and weighing 350N rests against a smooth vertical wall at an angle of 30…

A: The length of the ladder is,   The distance of the bottom of the ladder from the wall is,

Q: What will happen when the supports are removed from this system? 30 kg 12 kg kg 2 1.75 1.5 1.25 1…

A: Consider the given data as below. Mass, m1=30 kg Mass, m2=5 kg Mass, m3=12 kg   Draw the free body…

Q: An 8-m long horizontal boom with a mass of 100 kg (w = 981 N) supports a 2,000 kg load (W = 19,620…

A: The free body diagram of the rod is given below:   Here, Fv is the vertical force and Fh is the…

Q: A uniform beam of length L and mass M has its lower end pivoted at P on the floor, making an angle θ…

A: (a)Draw the free body diagram of the beam.

Q: The upper leg muscle (quadriceps) exerts a force of FQ = 1140 N, which is carried by a tendon over…

A: The free body diagram is shown as,

Q: In the figure shown, if the weight of the beam is 300 N. What is the force exerted by the beam on…

A:

Q: gymnast with a mass of 54 kg stands on the end of a uniform balance beam as shown in the figure.…

A:

Q: A lunch tray is being held in one hand, as the drawing illustrates. The mass of the tray itself is…

A:

Q: In the figure below, the biceps muscle exerts a force supporting a perpendicular forearm and a book.…

A: Given data: -  The force constant is k = 453 N/m. The angle of the forearm from horizontal is θ =…

Q: 800 N man is standing on a 4 m long plank of wood that is supported at each end by vertical ropes.…

A:

Q: A person supports himself on the ball of one foot. The normal force N=724 N pushes up on the ball of…

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Q: A model for the elbow joint models the bicep muscle connecting to the horizontal forearm by a…

A: Given data: T=2250 Nl=30 cm Need to determine the maximum mass that can be held in this way.

Q: As shown below, a horizontal beam is in equilibrium. The orange circle represents the hinge and the…

A: Given:T=363 Nlength of cable L=5mlength of beam d=4mF=76 N

Q: What will happen when the supports are removed from this system? 20 kg 30 kg 1.75 1.5 1.25 0.75 0.5…

A:

Q: The figure below shows a horizontal bar, of length 6.8 m, with forces acting on it. A 30 N force…

A: Consider the Free Body Diagram of the given system with all the cosine and sine components of all…

Q: A uniform beam of length L = 7.70 m and weight 4.75 ✕ 102 N is carried by two workers, Sam and Joe,…

A: At equilibrium, the net force acting along the vertical direction is zero. So, the equation can be…

Q: A 3m long weightless beam is supported at each end by cables. A painter weighing 900N stands 1m from…

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Q: A horizontal 12.5 kg beam 2.2 m long is attached to the wall by a hinge at its left end. A cable…

A:

Q: The figure below shows a horizontal bar of length 8.0 m, with forces acting on it. A 30 N force acts…

A: TORQUE IS GIVEN AS t=F×d                                          .......(1) where d is the moment…

Q: Two children push on opposite sides of a door during play. Both push horizontally and perpendicular…

A: For moving the door torque must be unbalance . Torque is given by , Torque = perpendicular distance…

Q: 66. A cable can support only a compressive or “pulling” force. True False 67. In…

A:

Q: A scaffold of mass 71 kg and length 4.8 mis supported in a horizontal position by a vertical cable…

A: mass of scaffold = 71 kg mass of washer = 64 kg Length of scaffold = 4.8 m Position of washer from…

Q: A scaffold of mass 79 kg and length 5.0 m is supported in a horizontal position by a vertical cable…

A:

Q: In the figure, a 60 kg man walks out on a 14 kg beam that rests on, but is not attached to, two…

A:

Q: A 20 kg ladder leans against a vertical wall with an angle of 20°. Determine the static friction at…

A: Given Ladder mass, m=20 kg Angle, θ=20° Standard Quantities g=9.8 m/s2

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.