Biomechanical research has shown that when a 67-kg person is running, the force exerted oh each foot as it strikes the ground can be as great as 2300 N. (a) What is the ratio of the force exerted on the foot by the ground to the person’s body weight? (b) If the only forces acting on the person are (i) the force exerted by the ground and (ii) the person’s weight, what are the magnitude and direction of the person’s acceleration? (c) If the acceleration found in part (b) acts for 10.0 ms, what is the resulting change in the vertical component of the person’s velocity?

Q: A 13.5 lb box is placed on the ground. (a)What force (in lb) does the ground exert on the box?…

A: Given, Weight of the block placed on the ground, W = 13.5 lb

Q: A particle is subjected to the action of two forces : F1 = 41+ 3 + 6 k [ kN ] and F2 = 51-61 -5k […

A:

Q: A woman holds a book by placing it between her hands such that she presses at right angles to the…

A: Static friction,

Q: In the figure, a crate of mass m = 109 kg is pushed at a constant speed up a frictionless ramp (0 =…

A: mass (m) = 109 kg θ = 29osurface = frictionless speed = constant

Q: If an applied force of 10 N directed at an angle of -30 degrees with respect to +x direction acts on…

A: Given: F = 10 N θ = - 30o  with respect to + x axis  mass 'm' is 3 kg We are asked to find the…

Q: On an aircraft carrier, a jet can becatapulted from 0 to 155 mi>h in 2.00 s. If the average force…

A:

Q: A person is pushing on a car with a force of and another person is pushing on a car with a force of…

A:

Q: A frictionless ramp is tilted 40 degrees above the horizontal and has a 15 kg block placed on it.…

A: Angle of ramp (θ) = 40o above the horizontal mass (m) = 15 kg

Q: (a) At a construction site, a pallet of bricks is to be suspended by attach- ing a rope to it and…

A:

Q: A worker pushes horizontally on a 36.0 kg crate with a force of magnitude 113 N. The coefficient of…

A: As per our guidelines, we can solve only 3 subparts. please resubmit remaining parts.

Q: Consider a patient with a dislocated shoulder placed in a traction appartus. The vectors A and B…

A: The net force  is 5.60 So, 5.60 = ACos32+Bcos32 As, A=B So, 5.6=2A×0.848 This implies A=5.6/1.696…

Q: o that Fair = c v, c

A:

Q: In order to properly specify the effect of a force on an object we need: O The magnitude, direction,…

A:

Q: At an accident scene on a level road, investigators measure a car's skid mark to be 102m long. The…

A:

Q: (a) What is the maximum frictional force in the knee joint of a person who supports 66.0 kg of her…

A:

Q: Consider the 52.0-kg mountain climber shown below. (a) Find the tension in the rope and the force…

A:

Q: On her way to visit Grandmother, Red Riding Hood sat down to rest and placed her 1.20-kg basket of…

A: Mass of basket: m = 1.20 kg Force applied by wolf: FW = 6.40 N Angle between wolf force and…

Q: A car (m-1920 kg) is parked on a road that rises 12° above the horizontal. What are the magnitudes…

A: Given : Mass of the car, m = 1920 kg Angle between the road ant the horizontal, t = 12o

Q: How much sand (in kgs) is needed to be added into the can in order to overcome friction from the…

A:

Q: wo forces are applied to a car in an effort to move it, as shown in the following figure, where F, =…

A: Given  F1=409N  F2=394 N Mass of car m=3000 kg

Q: Three forces act concurrrently on a body. Force A has a magnitude of 200 N and points 50o N of W;…

A: We have 3 forces given by A=200 N (50o North of West), B=100 N (30o East of North) and C=300 N (40o…

Q: A crate of mass 16.0 kg rests on a level surface. If the coefficient of kinetic friction between the…

A:

Q: A horizontal force of 680N is needed to overcome the force of static friction between a level floor…

A:

Q: A worker pushes horizontally on a 37.0 kg crate with a force of magnitude 113 N. The coefficient of…

A:

Q: A block is lifted by a plane inclined 20 ° with respect to the horizontal by means of a force F that…

A: Let F denotes the total applied force, F′x denotes the component of the force that is parallel to…

Q: The force acting on a partice has a magnitude of 114 NEand is directed 27.8º above the positive…

A: Force (F) = 114 N Angle of force above positive x axis (θ) = 27.8o

Q: Consider the 52.0-kg mountain climber as shown. (a) Find the tension in the rope and the force that…

A: It is given that,

Q: A horizontal force of 12 N pushes a 0.50-kg book against a vertical wall. The book is initially at…

A:

Q: A person is pushing on a car with a force of and another person is pushing on a car with a force of…

A: Given data: The force applied by person 1 is <4,-18>. The force applied by person 2 is…

Q: A block of mass m; = 4.00 kg is put on top of a block of mass m, = 7.00 kg. To cause the top block…

A:

Q: A crate of mass 16.0 kg rests on a level surface. If the coefficient of kinetic friction between the…

A:

Q: Two blocks are in contact on a frictionless table. A horizontal force is applied to the larger…

A:

Q: A block that weighs 60 N is intially at rest on a horizontal surface. A horizontal force F1 of…

A: a)Net force on the block is,

Q: A block of wood that has a mass of 5 kg rests on a horizontal surface. A horizontal force of 20 N…

A: (a) Analyze the free body diagram of the given system. Here, F, fs, W and N represent the…

Q: If a block of mass 889g is being pulled with a force of 2.2N parallel to a horizontal surface with a…

A:

Q: O Problem 3: Ablock with a mass of m = 25 kg rests on a frictionless surface and is subject o two…

A:

Q: Nine cubes are stacked one on top of the other. If every cube has a mass of m kg, what is the…

A: ( a ) weight of one cube = mg Weight of three cubes = 4mg Thus, the force exerted on the 5th cube by…

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.