Problem 3: How much work is done by the boy in the figure as he pulls his sister 30 m in a wagon with essentially frictionless wheels? F (50 N) 30° d = 30 m

A person carries a 35.0 N rock through the path shown in the figure, starting at A point  and ending at point B . The total time it took the person to go from A  to  B is 15.0 min. How much work did gravity do on the rock between A  and  B?

The two ropes seen in the figure are used to lower a 255 kg piano exactly 6 m from a second-story window to the ground. How much work is done by w (with an arrow to the right)?Express your answer in joules. How much work is done by T1 (with an arrow to the right)?Express your answer in joules.

A 5.0 kg block moves in a straight line on a horizontal friction- less surface under the influence of a force that varies with position as shown below. The scale of the figure's vertical axis is set by F, = 10.0 N. How much work is done by the force as the block moves from the origin to x = 8.0 m? F. 2 4 8 Force (N) -F₁ Position (m)

You have two vectors: A = 7.27î + 3ĵ and B = 4î - 0.95ĵ + 12k. If vector A represents a force vector and vector B is a displacement vector, what is the magnitude of work done by this force?

A father pulls his young daughter on a sled with a constant velocity on a level surface through a distance of 10 meters. If the total mass of the sled and girl is 35 kg and the coefficient of friction between the sled runners and the snow is 0.2, how much work does the father do?

A particle moves in the x-axis from x = 12.8 m to x = 23.7 m under the influence of a force   where F is expressed in newtons and x is expressed in meters. Use numerical integration to determine the total work done by the force during the displacement. In the networks there are Various calculators for integrals are available.

The spring-flex exercise system consists of a spring with one end fixed and a handle on the other end. The idea is that you exercise your muscles by stretching the spring from its natural length, which is 38 cm. If a 170 Newton force is required to keep the spring stretched to a length of 52 cm, how much work is required to stretch it from 51 cm to 70 cm? Your answer must include the correct units. Work =

In the figure, a constant force F a of magnitude 84.0 N is applied to a 3.0 kg shoe box at angle = 57.0°, causing the box to move up a frictionless ramp at constant speed. How much work is done on the box by F awhen the box has moved through vertical distance h = 0.35 m? Number i Units

An 8.10 kg package in a mail-sorting room slides 2.30 m down a chute that is inclined at 51.8 degrees below the horizontal. The coefficient of kinetic friction between the package and the chute's surface is 0.44.   Part A- What is the net work done on the package?Express your answer in joules.   Part B-Calculate the work done on the package by gravity. Express your answer in joules.   Part C-Calculate the work done on the package by the normal force.Express your answer in joules.   Part D- What is the net work done on the package? Express your answer in joules.