One species of Darwin’s finch, Geospiza magnirostris, can exert a force of 217 N with its beakas it cracks open a Tribulus seed case. If its beak moves through a distance of 0.42 cm duringthis operation, how much work does the finch do to get the seed?

The graph shows the xx component of a force that acts on an object that moves on the x axis. The vertical spacing between adjacent grid lines is 4.93N, while the horizontal spacing between adjacent grid lines is 1.0m.  What is the work, in joules, done by the force as the object moves from x=4m to x=5m?

In the movie Independence Day (mild spoilers, but old movie) Captain Steven Hiller (played by Will Smith) pulls an alien wrapped in a parachute across the desert.  Hiller pulls the parachute/alien with a constant force of 259. N for a distance of 2.8 x 105 m.  How much work did he do?

A 97.5-kg man pushes a crate 4.5 m up along a ramp that makes an angle of 17.5° with the horizontal. He exerts a force of 495 N on the crate parallel to the ramp and moves it at a constant speed. Calculate the work, in joules, that the man performs to cause the crate and himself to move up the ramp.

Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 85.0 kg down a 60° slope at constant speed, as shown in the figure. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by friction as the sled moves 30.0 m along the hill. Enter to 3 significant figures W fric (b) How much work is done by the rope on the sled in this distance? Hint: use Newton's second law to find the tension. Enter to 3 significant figures Wrope W. grav 60° J (c) What is the work done by the gravitational force on the sled? Enter to 3 significant figures J W₁ W J (d) What is the work done by the normal force? WN= J total (e) What is the total work done? Enter to 3 significant figures Note: When adding work done by individual forces, DO NOT ROUND THE VALUES TO FIND THE SUM. J Sense-making: If the speed of the rescue sled & the victim is constant, what do you expect the total work done on the rescue sled and the victim to be? Does your answer support…

The graph in the figure below shows the magnitude of the force ex- erted by a given spring as a function of the distance x the spring is stretched. How much work is needed to stretch this spring: (a) a distance of 5.0 cm, starting with it unstretched, and (b) from x - 2.0 cm to x = 7.0 cm? F (N) x (cm) 1 2 3 4 5 6 67 8 350 300 250 200 150 100 50

A person pulls a 10 kg luggage along a level road for 5 m by exerting a force of 20 N at an angle of 30° with the horizontal shoulder through a vertical distance of 1.5 m and carries it for another 5 m. How much work does he do in taking the luggage on his shoulder?