(II) A 380-kg piano slides 2.9 m down a 25° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6–36). Determine: (a) the force exerted by the man, (b) the work done on the piano by the man, (c) the work done on the piano by the force of gravity, and (d) the net work done on the piano. Ignore friction. FIGURE 6-36 Problem 10.

(II) A 380-kg piano slides 2.9 m down a 25° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6–36). Determine: (a) the force exerted by the man, (b) the work done on the piano by the man, (c) the work done on the piano by the force of gravity, and (d) the net work done on the piano. Ignore friction. FIGURE 6-36 Problem 10.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

(3) When a particle of mass m is at (x,0), it is attracted toward the origin with a force whose magnitude is k/x² where k is some constant. If a particle starts from rest at x = = b and no other forces act on it, calculate the work done on it by the time it reaches x = a, 0 < a
(I point) A pigeon with a total mechanical energy of 775 J sits atop a pole that is 47m tall. What is the mass of the pigeon?
(II) A ski starts from rest and slides down a 28° incline 85 mlong. (a) If the coefficient of friction is 0.090, what is theski’s speed at the base of the incline? (b) If the snow islevel at the foot of the incline and has the same coefficientof friction, how far will the ski travel along the level? Useenergy methods.
A 500,000 kgairplane is acceleratingupward at the rate of0.10g. (a) How muchforce (N) is involvedb) How much work (J)is done by this force ifthis plane moves adistance of 10,000meters upward.
A men of mass yong climbs up the stairs & reaches the roof at a height 8m in 5sec- find:- ii) force of gravity acting on the men (1) Work done by hime.
A film of Jesse Owens's famous long jump (Fig. 6–47) in the 1936 Olympics shows that his center of mass rose 1.1 m from launch point to the top of the arc. What minimum speed did he need at launch if he was traveling at 6.5 m/s at the top of the arc? FIGURE 6–47 Problem 84.
1-) A box with a mass of 10 kg is pulled along a roughly inclined plane at an initial speed of 1.5 m / s. The pulling force is 100 N parallel to the inclined plane at an angle of 20 ° to the horizontal. If the kinetic coefficient of friction is 0.4 and the case is pulled to a distance of 5 m, (a) How much work is done against gravity? (b) How much work is being done against friction? (c) How much work does a 100 N force do? (d) What is the change in the kinetic energy of the chest? (e) What is the speed of the crate after 5 m has been towed? (sin20 ° = 0.35 and cos20 ° = 0.94)
-40 A can of sardines is made to move along an x axis from F= exp(-4x), with x in meters and Fin newtons. (Here exp is the ex- ponential function.) How much work is done on the can by the force?
An athlete leaves one end of a pool of length L at t = 0 and arrives at the other end at time t,. She swims back and arrives at the starting position at time t3. If she is swimming initially in the positive x direction, determine her average velocities symbolically in the first half of the swim, the second half of the swim, and the round trip. (Assume that time t, is from the other end of the pool to the starting point. Use any variable or symbol stated above as necessary. Indicate the direction with the sign of your answer.) (a) the first half of the swim V avg (b) the second half of the swim Vavg (c) the round trip Vavg = (d) What is her average speed for the round trip? average speed = Need Help? Read It
If force and distance traveled are tripled, how does that affect work? Is it also tripled or 1/3?:(