Physics for Scientists and Engineers, Vol. 1
6th Edition
ISBN: 9781429201322
Author: Paul A. Tipler, Gene Mosca
Publisher: Macmillan Higher Education
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Chapter 6, Problem 34P
(a)
To determine
To Show:
(b)
To determine
To Show: The work done in moving the block is same if block is lifted and pushed it up on frictionless ramp.
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Chapter 6 Solutions
Physics for Scientists and Engineers, Vol. 1
Ch. 6 - Prob. 1PCh. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Prob. 5PCh. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 9PCh. 6 - Prob. 10P
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- An electric scooter has a battery capable of supplying 120 Wh of energy. If friction forces and other losses account for 60.0% of the energy usage, what altitude change can a rider achieve when driving in hilly ter-rain if the rider and scooter have a combined weight of 890 N?arrow_forwardHow much work is done by the boy pulling his sister 30.0 m in a wagon as shown below? Assume no friction acts on the wagon.arrow_forwardCoal is lifted out of a mine a vertical distance of 50 m by an engine that supplies 500 W to a conveyer belt. How much coal per minute can be brought to the surface? Ignore the effects of friction.arrow_forward
- Calculate the power output needed for a 950-kg car to climb a 2.00 slope at a constant 30.0 m/s while encountering wind resistance and friction totaling 600 N.arrow_forwardShown below is a 40-kg crate that is pushed at constant velocity a distance 8.0 m along a 30 Incline by the horizontal force . The coefficient of kinetic friction between the crate and the incline is k=0.40 . Calculate the work done by (a) the applied force, (b) the frictional force, (c) the gravitational force, and (d) the net force.arrow_forwardEngineers desire to model the magnitude of the elastic force of a bungee cord using the equation F(x)=a[x+9m9m( 9m x+9m)2] , where x is the stretch of the cord along its length and a is a constant. If it takes 22.0 kJ of work to stretch the cord by 16.7 m, determine the value of the constant a .arrow_forward
- A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (K=0.20) at constant velocity by a force directed 25 above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.arrow_forwardCheck Your Understanding Estimate the power expended by a weightlifter raising a 150-kg barbell 2 m in 3 s.arrow_forwardA particle of mass 2.0 kg moves under the influence of the force F(x)=(5x2=7x)N . Suppose a frictional force also acts on the particle. If the particle’s speed when it starts at x=4.0 m is 0.0 m/s and when it arrives at x=4.0 m is 9.0 m/s, how much work is done on it by the frictional force between x=4.0 m and x=4.0 m?arrow_forward
- How much work is done against the gravitationaI force on a 5.0-kg briefcase when it is carried from the ground floor to the roof of the Empire State Building, a vertical climb of 380 m?arrow_forwardAt the bottom of an air track tilted at angle , a glider of mass m is given a push to make it coast a distance d up the slope as it slows down and stops. Then the glider comes back down the track to its starting point. Now the experiment is repeated with the same original speed but with a second identical glider set on top of the first. The airflow from the track is strong enough to support the stacked pair of gliders so that the combination moves over the track with negligible friction. Static friction holds the second glider stationary relative to the first glider throughout the motion. The coefficient of static friction between the two gliders is s. What is the change in mechanical energy of the two-glider-Earth system in the up- and down-slope motion after the pair of gliders is released? Choose one. (a) 2smg (b) 2mgd cos (c) 2smgd cos (d) 0 (e) +2smgd cosarrow_forwardA 500-kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a mile) and encounters an average frictional force of 1200 N. What is its average power output in watts and horsepower if this takes 7.30s?arrow_forward
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