a weight lifter holds a 50kg weight a distance of 3m above the ground for 30 seconds.How much work is done on the weight in that time? Calculate it both ways and make sure that they match.

Q: A helicopter lifts a 100kg crate straight up via cable, with an acceleration of 0.8m/s?. If the…

A: mass of crate = 100 kg acceleration = 0.8 m/s2distance = 5 m

Q: A container with a mass of 5.1 kg is lifted to a height of 8 m and then returned back to the ground…

A: Solution: A container is lifted to height h and then returned back to ground level. How much work is…

Q: Samantha pushes a 4.1 kg crate up a ramp 3.5 * 10² m in length and inclined at 9.8° with the…

A: The situation of the crate on the inclined plane is shown below.

Q: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass of 97.5…

A: Normal force on sled is mgcosθ Friction force: Substitute mgcosθ for  in above equation. Here; =…

Q: How much work is done by the force of gravity in moving a 10 kg block from an initial height of 2 m…

A: Given:   Mass of block, m = 10 kg initial height, h1 = 2 m final height, h2 = 10 m   Value Used:…

Q: A 1.3 kgkg book is lying on a 0.80 mm -high table. You pick it up and place it on a bookshelf 2.2 mm…

A:

Q: How much work is done by you when you lift a 9.0 kg object 71 cm off of the ground?

A: Given : Mass of object (m) = 9 kg Height (h) = 71 cm = 0.71 m

Q: You toss a 0.10-kg ball straight up at a speed of 2.0m/s. How much work is done by gravity when the…

A:

Q: Does the work you do on a book when you lift it onto a shelf depend on the path taken? On the time…

A: Work done

Q: The work done by a fielder when he takes a catch in a cricket match, is negative. Explain.

A: Write the expression for the work done.

Q: If you pull a 9 kg mass vertically up 1.6 m at constant velocity, how much work do you do?

A: Given Mass= 9[kg] Height to which the mass is pulled up vertically= 1.6[m]  Work is said to be done…

Q: An apple weighing 1 N falls throughas a distance of 1 m. How much work is done on the apple by the…

A: weight of apple(W)= 1N Distance(d)=1m Work done=F.d=Fdcosθ F is force θ is angle between force and…

Q: How much work is done by a 59 kg ninja watrior in climbing a ladder that is 9 meters long? Express…

A: Mass of ninja warrior (m) = 59 kg  Length of ladder (L) = 9 m

Q: How much work is it to lift a 25  kg sack of cement vertically 4.3 m?

A: Given data:  Mass (m) = 25 kg Height (h) = 4.3 m Required: Work done (W)

Q: A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of…

A:

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 mouse of mass 200 g falls 120 m down a vertical mine shaft and lands at the bottom with a speed of…

A: Mass of mouse , MA = 200 g = 0.2 kg Depth , d = 120 m  speed , v = 8.5 m/s   To find = work done on…

Q: If I am holding a rock and it weighs 10N, and I carry the rock 10 m to the right, how much work did…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: How much work is done by a table as it holds up a 3.8 kg cat? O OJ O 3.8J O 37J O The answer depends…

A: Given Mass m of cat = 3.8 kg gravitation acceleration g = 9.8 m/s2

Q: A hill is 100 m long and makes an angle of 12° with the horizontal. As a 50-kg jogger runs up the…

A: Given : Length of the hill, l = 100 m The hill makes an angle of 12 degrees with the horizontal.…

Q: A helicopter lifts a 100kg crate straight up via cable, with an acceleration of 0.8m/s2. If the…

A: Given data The mass of the crate is m = 100 kg. The acceleration of the cable is a = 0.8 m/s2. The…

Q: It takes 3 s for 25 g car to go down a 100 incline for 1 m. ? How much work was done by friction?…

A: Given : Time, t = 3 s mass of car, m = 25 g  = 25*10-3 kg Inclination angle, θ = 100 Distance,x = 1…

Q: You push down on a 3.0 N box for 15 minutes. How much work was done?

A: According to the Newton's second law , the force acting on an object is defined as the product of…

Q: How much work is done? when 50N of force move a box through a distance?

A: Given, Force = 50 N

Q: You push down on a 4.0 N box against the floor for 2 minutes. How much work was done? How much power…

A: Answer Given  Weight of box w = 4 N Time t = 2 minutes

Q: How much work is done by the gravitational force when a 175 kg pile driver falls 4.0m?

A: Work done by force F in moving object distance d is given by,  W =F.d = F×d×cosθ Where, θ is the…

Q: A 6.0 kg box slides a 12 m distance on ice. If the coefficient of friction is 0.21, what is the work…

A: Given data: Mass (m) = 6.0 kg Distance (s) = 12 m Coefficient of friction (μ) = 0.21 Required: Work…

Q: Calculate the work done by a 2.4 N force pushing a 400 g sandwich across a table 0.75 m wide.

A:

Q: Can positive work and negative work be done on an object at the same time?

A:

Q: MY NOTES ASK YOUF A 390-lb gorilla climbs a tree to a height of 24 ft. Find the work done (in ft-lb)…

A:

Q: How much work is required to lift a 4.5 kg backpack 2.0m to put it on ?

A:

Q: A one-dimensional force has the form F(x) = A x2-Bx where A =1.8 N/m2 and B = 0.65 N/m. How much…

A: We have a one-dimensional force which is given by  F(x)=Ax2-Bx  where constants A=1.8 N/m2 and…

Q: You carry a 7.0 kg bag of groceries 1.2m above the level floor at a constant velocity of 75 cm/s…

A: Here bag makes an angle 900 with normal. So work done W = F.d  W = Fd cos 900

Q: If a person lifts up a heavy box weighing 500 N a distance of 20 cm off the ground, but then gets…

A: We have a box which has a weight of F=500 N that is lifted up to a height h=20 cm=0.2 m off the…

Q: How much work would be done in lifting the crate straight up the 1m distance?

A:

Q: A force of 60 N is applied to a 40 kg mass in the direction of motion for a distance of 5.0 m and…

A: Given  mass = 40 kg force = 60 N for the first 5.0 m  force = 120 N for the next 6.0 m Force is…

Q: A chain 59 meters long whose mass is 23 kilograms is hanging over the edge of a tall building and…

A:

Q: A boy is pulling his sister in a wagon, as shown in the figure. He exerts a force of F = 50.5 N at…

A: Given data:  Force (F) = 50.5 N Angle (θ) = 30° Displacement (d) = 27.5 m Required: Work done

Q: A 10 kg mass is held 1.0 m above a table for 25 s. How much work is done during  that time?

A:

Q: 11 3.0 m A 200 kg piano 3.0 m up a frictionless 200 incline at a constant speed? How much work is…

A:

Q: During a fitness test for the US marines, Jacob and Janelle ran up a hill. Jack is 1.5 times as…

A: Let Mass of janelle be m. Given mass of jack=1.5×m( mass of janelle) Let time taken by jack be t.…

Q: 8.1. What is the work done by a force of 20 N acting through a parallel distance of 8 m? What force…

A: The work done by a force is   W=Fd      =(20 N)(8 m)=160 J

Q: A force of F = 186 N pulls a mass of 15 kg a distance of x = 2.4 m, as shown. How much work is done…

A:

Q: It takes 3 s for 25 g car to go down a 10 degree incline for 1 m. ? How much work was done by…

A:

Q: How much work is required to life a 6.0-kg backpack 1.5m to put it on?

A: