A firefighter of mass 80kg slides down a vertical pole with an acceleration of 4m/(s^2). Show that the friction force that acts on the fire fighter is 480N

Question

A firefighter of mass 80kg slides down a vertical pole with an acceleration of 4m/(s^2). Show that the friction force that acts on the fire fighter is 480N

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Science
Physics

Related Physics Q&A

Find answers to questions asked by students like you.

Q: 28. The fishing pole in Figure P10.28 makes an angle of W 20.0° with the horizontal. What is the tor...

A: Given:  Force, F = 100 NRadius, r = 2 mFind: The torque exerted by the fish about an axis perpendicu...

Q: Kiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a...

A: Given:

Q: Please help

A: Given,

Q: In this lab you will use a spectrometer to measure the wavelengths ofseveral visible lines emitted f...

A: Energy level diagram showing the first four lines of Balmer series is,

Q: An ac generator with Em = 211 V and operating at 398 Hz causes oscillations in a series RLC circuit ...

A: Since we are entitled to answer up to 3 sub-parts, we’ll answer the first 3 as you have not mentione...

Q: Each of the uncharged capacitors in the figure has a capacitance of 25.8 µF. A potential difference ...

A: When the capacitors are connected in parallel, the total capacitance is the sum of the individual ca...

Q: A generation is about one-third of a lifetime. Approximately how many generations have passed during...

A: Given,

Q: A batted baseball leaves the bat at an angle of 35.0 ∘above the horizontal and is caught by an outfi...

A: (a)The ball is making a projectile motion. The range and angle made by the projectile are given,henc...

Q: Sharon pushes a tall box across the floor. Her arms (and therefore her push force) of F = 400 N make...

A: Given:

Q: 44. Rigid rods of negligible mass lying along the y axis con- nect three particles (Fig. P10.44). Th...

A: Given,

Q: Two rods of equal lengths (1.40 m) are moving as shown in the figure. The speed v1 = 2.00 m/s and th...

A: GivenLength of the rods L = 1.40 mSpeed of the rodsv1 = 2.00 m/sV2 = 1.10 m/sMagnetic field B = 0.45...

Q: Chapter 23, Problem 052 The figure shows a spherical shell with uniform volume charge density ρ = 1....

A: (a)Electric field at a radial distance r=0 from the center of the spherical charge distribution.Sinc...

Q: An alternating source drives a series RLC circuit with an emf amplitude of 6.24 V, at a phase angle ...

A: Write the expression for the resultant emf.

Q: Two large, parallel, conducting plates are 15 cm apart and have charges of equal magnitude and oppos...

A: Given:Distance between two large parallel conducting plates, d= 15 cm =0.15 mEqual and opposite char...

Q: In the figure, the magnetic flux through the loop increases according to the relation ΦB = 4.9t2 + 7...

A: Given,

Q: a boy jumps with a velocity of magnitude 20.0 m/s at an angle of 25.0 degrees above the horizontal. ...

A: Given information: The magnitude of the velocity with which the boy jumps is 20.0 m/s and the angle ...

Q: A child is riding a merry-go-round which completes one revolution every 8.36 s. The child is standin...

A: Write the expression for angular speed of the merry-go-round.

Q: Can you produce current from a magnet and vice versa?

A: Michel Faraday’s experiments on a magnet and a loop of wire explained the relation between electrici...

Q: Tectonic plates are large segments of the earth's crust that move slowly. Suppose one such plate has...

A: Given,

Q: In the figure four particles form a square with edge length a = 3.73 × 10-2 m. The charges are q1 = ...

A: Consider the figure given above, for the particle 1, the net force acting along x direction is given...

Q: Three point-like charges are placed at the corners of a square as shown in the figure, 40.0 cm on ea...

A: The distance between the charges q1 and q3 is equal to the length of the length of the diagonal of t...

Q: Suppose you use an ideal pulley of the type shown in (see attached image) to support a car engine of...

A:   a)The relation between tension and weight of load is,

Q: pipe 6-77 Water is flowing into and discharging from U-section as shown in Fig. P6-77. At flange (1)...

A: Let m denotes the mass flow rate, A denotes the area of the opening, P denotes the pressure and ρ de...

Q: What must the separation be between a 4.7 kg particle and a 6.6 kg particle for their gravitational ...

A: Write the expression for gravitational force of attraction.

Q: A 500-kg cannon fires a 4.0-kg projectile with a velocity of 500 m/s relative to the ground. What is...

A: According to the law of conservation of momentum,

Q: A person who weighs 800 N steps onto a scale that is on the floor of an elevator car. If the elevato...

A: Weight is,

Q: The cannon on a battleship can fire a shell a maximum distance of 36.0 km.   (a) Calculate the initi...

A: Given:The maximum distance upto which the shell can be fired from the canon aboard a battleship is, ...

Q: Find the components of the vector A⃗  with length a = 1.00 and angle α=20.0 ∘ with respect to the x ...

A: The equation for the magnitude of the x component of the vector is given by

Q: Coefficient of Linear Expansion a x 10-5 Material ах 10-5 Material ('C1) 2.94 1.33 0.899 1.88 1.17 2...

A: Thank you for the question. since we are entitled to answer up to 3 sub-parts, but third and fourth ...

Q: Suppose you design an apparatus in which a uniformly charged disk of radius R is to produce an elect...

A: Given:

Q: Wire C and wire D are made from different materials and have length LC = LD = 3.1 m. The resistivity...

A: The electric potential difference between point 1 and 2 is the potential drop in wire C.Write the ex...

Q: A 1450-kg submarine rises straight up toward the surface. Seawater exerts both an upward buoyant for...

A: The acceleration of the submarine can be calculated using given steps:Given:

Q: A rock is tossed straight up with a speed of 26 m/s . When it returns, it falls into a hole 12 mdeep...

A: Write the kinematic relation between initial and final velocity

Q: A stone is thrown upward from a bridge at a speed of 10m/s. it narrowly misses the bridge on the way...

A: The expression for the height of the bridge from kinematics equation,

Q: 31. A 150-kg merry-go-round in the shape of a uniform, Msolid, horizontal disk of radius 1.50 m is s...

A: Given: mass, m = 150 kgradius = 1.50 mAngular speed  = 0.5 rev/sTime, t = 2 sFind: The force exerted...

Q: Can you show me how to work this? I’m thinking I’m getting confused on the units. Thanks!

A: The ideal gas equation is,

Q: Suppose you use an ideal pulley of the type shown in (attached image) and find it necessary to exert...

A: a)The relation between tension and weight of load is,

Q: In the figure particles with charges q1 = +6e and q2 = -14e are fixed in place with a separation of ...

A: Given,

Q: One simple model for a person running the 100 m dash is to assume the sprinter runs with constant ac...

A: Given information: The maximum speed of the sprinter is 11.5 m/s, time taken to reach the maximum sp...

Q: A man stands on a platform that is rotating (without friction) with an angular speed of 1.39 rev/s; ...

A: a) The law of conservation of angular momentum can be applied to the given situation. Let the initia...

Q: A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-power...

A: The work done on the jet by the catapult can be calculated using given steps:Given:

Q: Chapter 28, Problem 006 Your answer is partially correct. A proton moves through a unform magneic te...

A: Given: 

Q: The riders push on the mower with a constant force of 45 Newtons for an hour.Using v = 0.40 m/sec, t...

A: Given:

Q: The electric field lines form a uniformly charged sphere carrying positive charge all point radially...

A: The equipotential surfaces are denoted as dotted concentric circles in the diagram below.

Q: Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are ...

A: Click to see the answer

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

A: Since, the door is held at rest this signifies that the torque exerted by the first child balances t...

Q: The figure shows two concentric rings, of radii R and R' = 2.54R, that lie on the same plane. Point ...

A: write the expression of electric field on the axis of  the small ring.

Q: An open top tank half filled with water is to be transported constant acceleration. The dimensions o...

A: 2.Slope of the free surface of the liquid is,

Q: What is the force( magnitude and direction) on an electron moving horizontally west at a speed of 3x...

A: Force on the electron is,

Q: In the figure a small, nonconducting ball of mass m = 0.77 mg and charge q = 2.5 × 10-8 C (distribut...

A: The horizontal force balanced on the ball is,The vertical force balanced on the ball is,