A parachutist whose mass is 80 kg drops from a helicopter hovering 1000 m above the ground and falls toward the ground under the influence of gravity. Assumethat the force due to air resistance is proportional to the velocity of the parachutist, with the proportionality constant b, = 30 N-sec/m when the chute is closed andb, = 100 N-sec/m when the chute is open. If the chute does not open until the velocity of the parachutist reaches 20 m/sec, after how many seconds will theparachutist reach the ground? Assume that the acceleration due to gravity is 9.81 m/sec.The parachutist will reach the ground after 2.01 seconds.(Round to two decimal places as needed.)

Given: Mass of the parachute is 80 kg. Height is 1000 m. b1=30 N-sb2=100 N-s

A parachutist whose mass is 80 kg drops from a helicopter hovering 1000 m above the ground and falls toward the ground under the influence of gravity. Assume that the force due to air resistance is proportional to the velocity of the parachutist, with the proportionality constant b, 30 N-sec/m when the chute is closed and by 100 N-sec/m when the chute is open. If the chute does not open until the velocity of the parachutist reaches 20 m/sec, after how many seconds will the parachutist reach the ground? Assume that the acceleration due to gravity is 9.81 m/sec. The parachutist will reach the ground after 2.01 seconds.

A parachutist whose mass is 80 kg drops from a helicopter hovering 1000 m above the ground and falls toward the ground under the influence of gravity. Assume that the force due to air resistance is proportional to the velocity of the parachutist, with the proportionality constant b, 30 N-sec/m when the chute is closed and by 100 N-sec/m when the chute is open. If the chute does not open until the velocity of the parachutist reaches 20 m/sec, after how many seconds will the parachutist reach the ground? Assume that the acceleration due to gravity is 9.81 m/sec. The parachutist will reach the ground after 2.01 seconds.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: 1. If an object has a weight of 10 Ibf on the moon, what would the same object weigh on Jupiter? ft…

Q: Find the positions of the two masses

Q: Five identical boxes with the same speeds slide along a frictionless horizontal surface. The mass of…

A: Given data: Mass of each box, m = 10 kg. Consider block 1: F to the right and d = 7 m to the…

Q: ou drop a golf ball from a height of 1.0 m above the ground. It hits the ground and returns to a…

A: given; You drop a golf ball from a height of 1.0 m above the ground. It hits the ground andreturns…

Q: ?What is the net force and direction -3 Engine Car Trailer 6000 N 1000 N 1000 N

A: We have to find net force

Q: Classical mechanics- obtain the equation of motion for a particle falling freely under the…

A: GIVEN :-A particle falling freely under influence of gravity with frictional presence.SOLUTION :-As…

Q: A 150-lb crate is released from rest along a 30° inclined plane. The coefficient of kinetic friction…

Q: A 130-lb block is pulled up by a constant force P through a cable to move up the inclined surface…

Q: You push a box of mass 20.6 kg with your car up to an icy hill slope of irregular shape to a height…

A: Write the given data with suitable variables. m1=20.6 kgm2=19 kgh=4.3 m

Q: Consider a satellite around Earth in an elliptic orbit. At a point in its orbit, the radius (in km)…

Q: A spring with a spring constant k of 20 pounds per foot is loaded with a 10-pound weight and allowed…

Q: A light spring with force constant 3.80 N/m is compressed by 7.60 cm as it is held between a…

A: Write down the given value using suitable variables. Here K signifies force constant, x signifies…

Q: Some ECOR1048 students are curious about expanding their knowledgebase and conduct an experiment.…

Q: A basketball player drops a 0.5 kg basketball vertically so that it is traveling at 5.0 m/s when it…

Q: A block with mass m slides without friction down an incline on a moving cart of mass 4m. Use…

Q: A ball of mass m falls freely from the ground at height h and touches a spring of height h0. The…

A: Given: initial height = h spring at upstretched length = h0 To find: compressed length of spring…

Q: a capsule attached to a line is being rotated in a vertical loop of radius of 15 meters determine:…

A: Given: r = 15 m and vertical circular motion

Q: Q5. As shown in the image below, two objects, A and B, are connected using the cable and pulley…

A: Given : The velocity of B =20 ms( downward ) Free body diagram : Here T is the tension in the…

Q: An Earthball of mass 13.6 kg is rolling forward at 5.29 m/s when pushed by two students. A senior…

Q: 2. A 20-g bullet is travelling at 400 m/s when it becomes embedded in a 3-kg stationary block. The…

Q: AW disk = 5 lb disk is travelling around in a circle of radius r₁ with an initial tangential…

A: The weight of the disk, Wdisk = 5 lbThe tangential velocity of the disk, vB1 = 5 ft/sThe velocity of…

Q: A kid is playing with a 4 kg skateboard as shown in Figure Q2 (b). The boy with mass of 40 kg jumps…

A: To Find: The maximum distance s that boys reach. Given: The mass of skateboard is ms=4 kg. The mass…

Q: A car m = 200 tons makes the journey shown in the figure, if it moves with an initial speed of…

A: Based on diagram, trajectory is assumed to be an hemisphere with radius 15000 m. FBD:

Concept explainers

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

A parachutist whose mass is 80 kg drops from a helicopter hovering 1000 m above the ground and falls toward the ground under the influence of gravity. Assume
that the force due to air resistance is proportional to the velocity of the parachutist, with the proportionality constant b, = 30 N-sec/m when the chute is closed and
b, = 100 N-sec/m when the chute is open. If the chute does not open until the velocity of the parachutist reaches 20 m/sec, after how many seconds will the
parachutist reach the ground? Assume that the acceleration due to gravity is 9.81 m/sec.
The parachutist will reach the ground after 2.01 seconds.
(Round to two decimal places as needed.)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Please explain answers and include work. Please write the explanations and work out to make them easy to follow and understand.
The motion of a train of mass 340M8 is opposed by a tractive resistance to motion of 190N/Mg. The train covers a total distance of 800m while accelerating during 1.5min on its way up an incline of 1 in 140 from an initial speed of 18km/h Analyse the motion and calculate: • The magnitude of the tractive resistance to motion in N: N • The speed of the train after 1.5min up the incline, m/s The acceleration of the train, a = m/s? • The force delivered from the train engine to achieve the acceleration, Fdr = • The power output at the instant the train reaches 800m, P = W Assume the power is witched off immediately after the train has reached 800m, analyze the further part of the motions and calculate: • how long, after the initial 1.5 min will the train still move up the incline before stopping, assuming the same tractive resistance to motions with no brakes applied, At = • Calculate the variation of the potential and kinetic energies between the initial instant at 18 km/h and the moment…
A helicopter with a mass of 10,000 kg takes off straight up at t=0. The thrust of the engine is defined given as a function of time: FT= 95 0.18t- (kN). Where t is in units of seconds. How fast is it rising and what is its elevation at t=4s?
You place a 0.18-kg sonic ranger on a low-friction track in front of a 0.50-kg cart to measure the cart's velocity in the Earth reference frame, which turns out to be +(1.0 m/s). You are distracted, the cart hits the ranger in a totally inelastic collision, and the two objects then move forward together. A friend is running toward the cart with a velocity of -(3.5 m/s) with her sonic ranger on and pointed at the cart. ▾ Part A What is the x-component of the momentum of the cart with the ranger stuck to it, in your friend's reference frame?
A 498-gram ball is traveling horizontally at 11.1 m/s to the left when it is suddenly struck horizontally by a bat, causing it to reverse direction and initially travel at 8.8 m/s to the right. If the bat produced an average force of 1.3 kN on the ball, for how long (in milliseconds) was it in contact with the ball?
A stone of mass 3 kg is dropped into a water tank. The stone has negligible speed when entering the water surface and takes 3 seconds to sink to the bottom. While sinking, the resistance of the water is 9N. The acceleration of the stone and the height of water column are respectively: O 1.6.81 ms 2, 30.64 m O 2. 9.81 ms¯4, 44.1 m O 3. (-) 9.81 ms Z, 44.1 m O 4. 12.81 ms¯2, 57.6 m
9. A spring has a stiffness of 100N/m. A mass of 3 kg was attached to the spring. The mass was pushed 10cm upward from the equilibrium position and was released from rest. After 5 seconds from release, determine the acceleration of the mass in m/s^2? 10.What Law governs the statement, "For every object applied with a load, the displacement or size of deformation is directly proportional to the magnitude of the applied load"?
Two masses are attached by a wire as shown. M2 drops 6 m before hitting the ground. M2 = 60 kg %3! u = 0.1 M1 = 20 kg H = 6 m 0 = 60° a) What is the velocity of the mass when it hits the ground? (Use work-energy)
please show proper solution using formulae
1. Two blocks are connected by a pulley system shown in the figure below. Neglect friction between the block on the left and the ramp sloped at angle 0. Suppose that the block on the left has mass m, and that the block on the right is moving downward at a constant speed v. m Given m, 0, and v, answer the questions below. (a) Find the mass of the block on the right? (b) Find the velocity of the block on the left. (c) If the block on the right was moving at a constant speed v upward, instead of downward, how would your answer to Question la change?
A vertical spring with a mass attached at its end stretches by an amount 20 cm before coming to rest. The same spring and mass is now placed on a smooth inclined plane with one end fixed to the top of the plane. The plane makes an angle of 30° with the horizontal. By how much will the spring stretch before coming to rest? |The spring on the inclined plane is stretched further by 15 cm and released from rest. What is its speed when it passes through the new equilibrium position?
Please don't Provide handwritten solution ....