Answered: A 50-N force is the only force acting…

A 50-N force is the only force acting on a 2-kg crate that starts from rest. At the instant the object has gone 2m the power of the force is: O 2.5W 25W O 75W 100W O 500W

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 31P: A constant 20-N force pushes a small ball in the direction of the force over a distance of 5.0 m....

See similar textbooks

Related questions

Q: A force of 80 pounds on a rope is used to pull a box up a ramp inclined at 10° from the horizontal.…

A: The work done by a force F is defined to be the product of the component of the force in the…

Q: A top fuel dragster with a mass of 500.0 kg starts from rest and completes a quarter mile (402 m)…

A: Answer Given Mass m = 500 kg Time interval ∆t = 5 s Initial speed vi = 0 m/s Final speed vf = 130…

Q: what is the power of a crane that lifts it uniformly in a hurry to a height of 5 meters during 5…

A: The work done is calculated as, W=mghW=200×9.8×5W=9800 J

Q: A 4-N force is applied to a 2-kg object that is moving at 3 m/s. This force is parallel to the…

A: 7) Given:- The object has a mass of m = 2 kg The velocity of the object is v = 3 m/s The force…

Q: A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting…

A: The answer is below

Q: At constant work done, the power needed to lift a package up a shelf is if the time taken is…

A: We know that power = force×velocity Work done is constant means force is constant. If time taken is…

Q: The electric motor of a model train accelerates the train from rest to 0.502 m/s in 20.0 ms. The…

A: mass of model train (m) = 825 g = 0.825 kg initial velocity (u) = 0 msfinal velocity (v) = 0.502…

Q: A force of 50 N holds an ideal spring with a 20-N/m spring constant in compression. The potential…

Q: Choose the BEST answer to the following: The power required to raise a 100-kg crate a vertical…

A: Given:Mass=100kgvertical distance =2mTime=4s

Q: In an exercise class, a PE teacher instructed a student to do a chin up. Compute for the power…

A: Mass of student (m) =42 kg Distance travelled (h) =0.25 m Work done by student during this…

Q: A mechanic uses a chain and bloc pulley to lift a 875-kg engine 4.0 m to the top of the garage. the…

Q: A person does some work of 1,000 J in 2 s. His power will be ...... A) 1000W B) 25W C) 500W…

Q: The work you do when pushing a shopping cart twice as far while applying the same force is A) half…

A: Given data: New displacement (d') = 2d New force (F') = F Required: New work done

Q: How much work is done lifting a 2.3 N hamburger a vertical distance of 0.30 meters from the table to…

Q: A boy of mass 40 kg climbs a vertical rope 8 meters in length in 12 seconds with constant velocity.…

A: Mass of boy= 40 Kg Time = 12 s Height gain= 8 m

Q: A particular machine is capable of power of 2000 watts. How far can it lift a 70 newton weight in 4…

Q: A girl with 40kg mass is riding an 8 kg bicycle. At the top of the hill her speed is 6.0 m/s, and…

Q: Determine the power a hiker of mass - 60 kg must have to carry up a 20 kg backpack up a hill of…

A: Mass of hiker, M = 60 kgMass of backpack, m = 20 kgHeight, h = 20 mTime, t = 4 sAcceleration due to…

Q: is attached to a 20m hanging rope that weights 0.3 N/m. The monkey climbs the rope up to

A: Given-Force F1=5NWeight =0.3 N/mLength of rope L=20 m

Q: A 45 kg athlete runs up a flight of stairs in 4 s. His net upward displacement is 9 m. What average…

Q: A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting…

A: Average power is the amount of work done or energy converted per unit time and given by: Pavg.=∆W∆t…

Q: A piano with a mass of 137 kg is lifted 10 m above the ground in 5 s by a crane. What is the power…

A: mass of piano m = 137 kg height lifted h =10 m time t=5s

Q: A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting…

Q: 13. A 700-kg horse whose power output is 1.0 hp is pulling a sled over the snow at 3.5 m/s. Find the…

Q: An 82 kg man in basic training climbs a 16 m vertical rope at constant speed in 8 s. What is his…

A: mass of man (m) = 82 kg height (h) = 16 m time (t) = 8 seconds

Q: A box is being pulled up a rough 1) one force incline by a rope connected to a 2) two forces pulley.…

A: The free-body diagram of the box on the rough inclined surface is shown below. Here, T is the…

Q: The total mass of the model train is 500 g. The electri motor of a model train accelerates the train…

Q: A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting…

A: Mass of helicopter M= 780 kg Iniatial speed of helicopter u = 0 Final speed of helicopter v= 10.0…

Q: A girl with a 40 kg mass is riding an 8 kg bike. At the top of the hill her speed is 6 m/s and her…

Q: Javier moved the 15 kg dumbbell from a rack 1.1 m above the floor to the weight bench 0.65 m above…

A: Given data: Mass (m) = 15 kg Height of rack = 1.1 m Height of weight bench = 0.65 m Required: Work…

Q: a force of 30.0 N is required to push a 20.0kg mass 2.00 m across the floor. the mass is then lifted…

A: The work done by a force is given by, W=Fdcosθ Here, F is the magnitude of the force, d is the…

Q: A jump can push water at a height of 8 m at a rate of 2 kg/s. What is the power outpu

A: We know thatP=Et (1)WhereP=PowerE=Energyt=time takenEnergy is equal to…

Q: Calculate the change in potential energy of a 35.0 kg box that is placed on a 2.25 m high chair and…

A: mass of box = 35 kg initial position of box = on top of 2.25 m high chair final position of box = on…

Q: 6.6. A motor boat moves at a steady speed of 4 ms acting on it is 4000 N. Calculate the power of its…

A: Given data : Speed of the boat = v Force = F To…

Q: The work you do when pushing a shopping cart twice as far while applying double the force is A)…

Q: A 715-N Marine in basic training climbs a 10.5-m vertical rope at a constant speed in 6.00 s. What…

Q: A biker and bicycle together weigh 80 kg. What power does the biker output when riding up a 9% grade…

Q: ow much power (in kW) is required to raise an elevator with a mass of 1,722 kg at a rate of 54…

A: Given values:- Mass of the elevator,(m)=1722 kg -----(1) Rate,(v)=54 m/min=0.9 m/sec ------(2)…

Q: The units of work is: 1-j/sec 2-kg.m/sec squere 3- n/m squere 4-n/m

A: The given problem can be solved using dimension analysis, as following :- Work done is given by as…

Q: Rita raises a 10.0 kg package to a height of 2.5 m in 2.0 s. How much power was expended on the…

A: Given Mass (m) = 10 kg Height (h) = 2.5 m time (t) = 2 s Work done by Rita against gravity w =…

Q: You apply a force of 1.5 N at an angle of 34° from the vertical on a block that is sitting on a…

A: Work is defined as W=F→·d→=Fdcosθ Here F→ is force, d→ is displacement and θ is the angle between…

Q: A boy of mass 35 kg climbs a vertical rope 10 meters in length in 12 seconds with constant velocity.…

A: Given Mass of boy , m=35kg Length of rope d=10m Time t=12s Acceleration due to gravity g=9.8m/s²…

Q: A boy of mass 35 kg climbs a vertical rope 10 meters in length in 12 seconds with constant velocity.…

A: Given : m = 35 kg h = 10 m t = 12 seconds

Q: A boy of mass 45 kg climbs a vertical rope 9 meters in length in 15 seconds with constant velocity.…

Q: A car weighing 1.2 tons. Its engine generates power Its value is 2000 newtons. Serious hurry The Car…

A: We have from Newton's second law of motion ,F=ma , where F is force , m is mass and a is…

Q: What can you do to increase the power you develop as you climb a flight of stairs?

A: Power is defined as the work done per unit time. P=worktime According to the work-kinetic enrergy…

Q: Starting at rest, what will happen to the work done by the applied force of the engine if the cars…

Q: A child pulls a sled (mass 8.00 kg ) over a distance of 20.0 m [West] by applying a force of 30.0 N…

Q: A 4.10-kg box of books is lifted vertically from rest a distance of 1.60 m with a constant, upward…

A: Given that mass m = 4.10 kg displacement d = 1.60 m Force F = 52.7 N

Question

A 50-N force is the only force acting on a 2-kg crate that starts from rest. At the
instant the object has gone 2m the power of the force is.
O 2.5W
25W
O 75W
O 100W
O 500W
REDMI NOTE 8
Al QUAD CAMERA
SYung with constant speed around a

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

Trending now

This is a popular solution!

Step by step

Solved in 2 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, physics and related others by exploring similar questions and additional content below.

Similar questions

An 8.0-g bullet has a speed of 800 m/s. (a) What is its kinetic energy? (b) What is its kinetic energy if the speed is halved?
A sled stalls from rest at the top of a snow-covered incline that makes a 22 angle with the horizontal. After sliding 75 m down the slope, its speed is 14 m/s. Use the work-energy theorem to calculate the coefficient of kinetic friction between the runners of the sled and the snowy surface.
A person in good physical condition can put out 100 W of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time: (a) How many people ‘would it take to nm a 4.O0-kW electric clothes dryer? (b) How many people would it take to replace a large electric power plant that generates 800 MW?
A girl pulls her 15-kg wagon along a flat sidewalk by applying a 10-N force at 37 to the horizontal. Assume that friction is negligible and that the wagon starts from rest. (a) How much work does the girl do on the wagon in the first 2.0 s. (b) How much instantaneous power does she exert at = 2.0 s?
A 4.00-kg crate Marling at rest slides dawn a rough 6.00-m-long ramp, inclined at 30.0 below the horizontal The magnitude of the force of friction between the crate and the tamp is 8.00 N (a) How much work is done on the crate by friction? (b) What is the change in potential energy of the crate in sliding down the ramp? (c) What is the speed of the crate at the bottom of the incline? (See Sections 5.2 and 5.3.)
Grains from a hopper falls at a rate of 10 kg/s vertically onto a conveyor belt that is moving horizontally at a constant speed of 2 m/s. (a) What force Is needed to keep the conveyor belt moving at the constant velocity? (b) What is the minimum power of the motor driving the conveyor belt?
Most electrical appliances are rated in watts. Does this rating depend on how long the appliance is on? (When off, It is a zero-wan device.) Explain in terms of the definition of power.
A 5.0-kg box has an acceleration of 2.0m/s2 when it is pulled by a horizontal force across a surface with K=0.50 . Find the work done over a distance of 10 cm by (a) the horizontal force, (b) the frictional force, and (c) the net force. (d) What is the change in kinetic energy of the box?
A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N frictional force. He pushes in a direction 25.Oc below the horizontal. (a) What is the work done on the cart by friction? (b) What is the work done on the cart by the gravitational force? (c) What is the work done on the cart by the shopper? (d) Find the force the shopper exerts, using energy considerations. (e) What is the total work done on the cart?
At hokey puck of mass 0.17 kg is shot across a rough floor with the roughness different at different places, which can be described by a position-dependent coefficient of kinetic friction. For a puck moving along the x-axis, the coefficient of kinetic friction is the following function of x, where x is in m: (x)=0.1+0.05x . Find the work done by the kinetic frictional forte on the hockey puck when it h moved (a) from x=0 to x=2 m, and (b) from x=2 m to x=4 m.
Give an example of something we think of as work in everyday circumstances that is not work in the scientific sense. Is energy transferred or changed in form in your example? If so, explain how this is accomplished without doing work.
A 200-g steel ball is tied to a 2.00m “massless” string and hung from the ceiling to make a pendulum, and then, the ball is brought to a position making a 30 angle with the vertical direction and released from rest. Ignoring the effects of the air resistance, find the speed of the ball when the string (a) is vertically down, (b) makes an angle of 20 with the vertical and (c) makes an angle of 10 with the vertical.