of the slope.b) Calkulate the net force that acts on theskateboarder as he moves down the slopea Calculate the work done by the net force, asthe skateboarder moves 36 m down the slope.Fig 4.42: A skateboarder skates down a slope indat 25° to the horizontal.d) Use the work-energy theorem to calculate the initial velocity of theskateboarder near the top of the slope.In Figure 4.43, a 3 kg blockslides at a constant velocityof 7 m.s along a horizontalsurface. It then strikes arough surface, causing it toexperience a constantfrictional force of 30 N. Theblock slides 2 m under theinfluence of this frictionalforce before it moves up africtionless ramp inclined atan angle of 20° to the horizontal, as shown.7 m,s-13 kgof202 mFig 4.43: A block moves horizontally and then up a slope.a) Use the work-energy theorem to show by calculation that the speed of theblock at the bottom of the ramp is 3 m.s-.b) Draw a free-body diagram to show the fòrces acting on the block while theblock is sliding up the ramp.Labelanyrelevant angles.) Calculate the distance (d) that the block slides up the ramp before comingto rest.A crate of mass 70 kg slides down a rough incline that makesan angle of 20° with the horizontal, as shown in Figure 4.44.The crate experiences a constant frictional force ofmagnitude 190 N during its motion down the incline. Theforces acting on the crate are represented by R, S and T.7.work on the crate.12 mts

(a) Speed of block at the bottom of the ramp = 3 m/s (c) d = 1.34m My work is attached below, I…

In Figure 4.43, a 3 kg block slides at a constant velocity of 7 m.s along a horizontal surface. It then strikes a rough surface, causing it to experience a constant frictional force of 30 N. The block slides 2 m under the influence of this frictional force before it moves up a frictionless ramp inclined at an angle of 20° to the horizontal, as shown. 7 m.s-1 3 kg 20 2 m Fig 4.43: A block moves horizontally and then up a slc a) Use the work-energy theorem to show by calculation that the speed of the block at the bottom of the ramp is 3 m.s- b) Draw a free-body diagram to show the forces acting on the block while the block is sliding up the ramp. any relevant angles. c) Calculate the distance (d) that the block slides up the ramp before coming

In Figure 4.43, a 3 kg block slides at a constant velocity of 7 m.s along a horizontal surface. It then strikes a rough surface, causing it to experience a constant frictional force of 30 N. The block slides 2 m under the influence of this frictional force before it moves up a frictionless ramp inclined at an angle of 20° to the horizontal, as shown. 7 m.s-1 3 kg 20 2 m Fig 4.43: A block moves horizontally and then up a slc a) Use the work-energy theorem to show by calculation that the speed of the block at the bottom of the ramp is 3 m.s- b) Draw a free-body diagram to show the forces acting on the block while the block is sliding up the ramp. any relevant angles. c) Calculate the distance (d) that the block slides up the ramp before coming

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 21RQ

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