College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Chapter 5, Problem 15P
|| A. man pushes on a piano of mass 180 kg 50 that it sides at a constant velocity of 12.0 cm/s down a ramp that is inclined at 11.0° above the horizontal. No appreciable friction is acting on the piano. Calculate the magnitude and direction of this push (a) if the man pushes parallel to the incline. (b) if the man pushes the piano up the plane 1nstead. also at 12.0 cm/s parallel to the inc1ine. and (c) if the man pushes horizontally. but; still with a speed or 12.0 cm/s.
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Please help me on questions A - F
(a) An elevator of mass m moving upward has two forces acting on it: the upward force of tension in the cable and the downward force due to gravity. When the elevator is accelerating upward, which is greater, T or w?
1. T 2. w 3. Both forces are equal.
(b) When the elevator is moving at a constant velocity upward, which is greater, T or w?
1. T 2. w 3.Both forces are equal.
(c) When the elevator is moving upward, but the acceleration is downward, which is greater, T or w?
1. T 2. w 3.Both forces are equal.
(d) Let the elevator have a mass of 1,225 kg and an upward acceleration of 2.3 m/s2. Find T. _____________________ NIs your answer consistent with the answer to part (a)?
Yes / No
(e) The elevator of part (d) now moves with constant upward velocity of 10 m/s. Find T. _____________________ NIs your answer consistent with your answer to part (b)?
Yes / No
(f) Having initially moved…
1. A man pushes on a piano with mass 180 kg so that it slides at constant velocity down a ramp
that is inclined at 11.0° above the horizontal floor. Neglect any friction acting on the piano.
Calculate the magnitude of the force applied by the man if he pushes (a) parallel to the incline
and (b) parallel to the floor.
Find the tension in an elevator cable if the 1 700-kg elevator is descending with an acceleration of 2.4 m/s2, downward.
Find the tension in an elevator cable if the 1 700-kg elevator is descending with an acceleration of 2.4 m/s2, downward.
3.5E+3 N
1.3E+4 N
1.8E+5 N
1.6E+4 N
2.5E+2 N
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Chapter 5 Solutions
College Physics (10th Edition)
Ch. 5 - Can a body be in equilibrium when only one force...Ch. 5 - A clothesline is hung between two poles, and then...Ch. 5 - A man sits in a seat that is suspended from a...Ch. 5 - You push a box up a frictionless incline at a...Ch. 5 - Why is it so much more difficult to walk on icy...Ch. 5 - A car accelerates gradually to the right with...Ch. 5 - Without doing any calculations, decide whether the...Ch. 5 - A box slides up an incline, comes to rest, and...Ch. 5 - For the objects shown in Figure 5.27, will the...Ch. 5 - A woman is pushing horizontally on two boxes on a...
Ch. 5 - In a world without friction, could you (a) walk on...Ch. 5 - You can classify scales for weighing objects as...Ch. 5 - When you stand with bare feet in a wet bathtub,...Ch. 5 - A horizontal force accelerates a box across a...Ch. 5 - You slide an 800 N table across the kitchen floor...Ch. 5 - A woman wearing spiked shoes pushes two crates...Ch. 5 - A horizontal force with a magnitude P pulls two...Ch. 5 - A crate slides up an inclined ramp and then slides...Ch. 5 - A weightless spring scale is attached to two equal...Ch. 5 - Two objects are connected by a light wire as shown...Ch. 5 - A 100 N weigh: is supported by two weightless...Ch. 5 - The System shown a Figure 5.34 is released from...Ch. 5 - In the system shown in Figure 5.35, M m, the...Ch. 5 - | A 15.0 N bucket is to be raised at a constant...Ch. 5 - | In a museum exhibit, three equal weights are...Ch. 5 - | Two 25.0 N weights are suspended at oppos1te...Ch. 5 - | Two weights are hanging as shown in Figure 5.38....Ch. 5 - | An adventurous archaeologist crosses between two...Ch. 5 - || A 1130 kg car is being pulled up a frictionless...Ch. 5 - || BIO Muscles and tendons. Muscles are attached...Ch. 5 - | BIO Traction apparatus. In order to prevent...Ch. 5 - | BIO A broken thigh bone. When the thigh is...Ch. 5 - || A heavy mirror that has a width of 1 m is to be...Ch. 5 - || In a rescue, the 73 kg police officer is...Ch. 5 - || A tetherball leans against the smooth,...Ch. 5 - Find the tension in each cord in Figure 5.47 if...Ch. 5 - || Two blocks. each with weight w. are held in...Ch. 5 - || A. man pushes on a piano of mass 180 kg 50 that...Ch. 5 - || BIO Forces during chin-ups. People who do...Ch. 5 - || Force on a tennis ball. The record speed for a...Ch. 5 - || BIO Force during a jump. An average person can...Ch. 5 - || Two weights are hanging from the ceiling of an...Ch. 5 - || A large fish hangs from a spring balance...Ch. 5 - || A 750.0 kg boulder is raised from a quarry 125...Ch. 5 - || Which way and by what angle does the...Ch. 5 - | At a construction site, a 22.0 kg bucket of...Ch. 5 - || Two boxes are connected by a light string that...Ch. 5 - | An 80 N box initially at rest is pulled by a...Ch. 5 - | A 2 kg book sits at rest on a horizontal table....Ch. 5 - | At a construction site, a pallet of bricks is to...Ch. 5 - || Two crates connected by a rope of negligible...Ch. 5 - || A hockey puck leaves a players stick with a...Ch. 5 - || Stopping distance of a car. (a) If the...Ch. 5 - || An 85 N box of oranges is being pushed across a...Ch. 5 - || A stockroom worker pushes a box with mass 11.2...Ch. 5 - || The coefficient of kinetic friction between a...Ch. 5 - || Measuring the coefficients of friction. One...Ch. 5 - | With its wheels locked, a van slides down an...Ch. 5 - | BIO The Trendelberg position. In emergencies...Ch. 5 - || BIO Injuries to the spinal column. In treating...Ch. 5 - || A toboggan approaches a snowy hill moving at...Ch. 5 - || A 25.0 kg box of textbooks rests on a loading...Ch. 5 - || A person pushes on a stationary 125 N box with...Ch. 5 - || You are working for a shipping company. Your...Ch. 5 - || An atmospheric drag force with magnitude FD=...Ch. 5 - || What is the acceleration of a raindrop that has...Ch. 5 - || A bullet is fired horizontally from a...Ch. 5 - | You find that if you hang a 1.2Ekg weight from a...Ch. 5 - | An unstretched 50ring is 12.00 cm long. When...Ch. 5 - BIO Heart repair. A 5urgeon is using material from...Ch. 5 - | A 3 kg mass and a 10 kg mass are attached to...Ch. 5 - || A student measures the force required to...Ch. 5 - | Three identical 6.40 kg masses are hung by three...Ch. 5 - | A light spring having a force constant of 125...Ch. 5 - || in the previous problem, what would the answers...Ch. 5 - || Youve attached a bungee cord to a wagon and are...Ch. 5 - || Atwoods machine. A 15.0 kg load of bricks hangs...Ch. 5 - | Mountaineering. Figure 5.62 shows a technique...Ch. 5 - || Two identical, perfectly smooth 71.2 N bowling...Ch. 5 - || A 2 kg block is launched up a frictionless...Ch. 5 - BIO || The stretchy silk of a certain species of...Ch. 5 - || Block A in Figure 5.66111 weighs 60.0 N. The...Ch. 5 - || Friction in an elevator. You are riding in an...Ch. 5 - BIO || A student attaches a series of weights to a...Ch. 5 - BIO || A 65.0 kg parachutist falling vertically at...Ch. 5 - || Block A in Figure 5.68 weighs 1.20 N and block...Ch. 5 - || A block with mass m1 is placed on an inclined...Ch. 5 - || A pickup truck is carrying a toolbox, but the...Ch. 5 - || A window washer pushes his scrub brush up a...Ch. 5 - || An astronaut on the distant planet Xenon uses...Ch. 5 - || Elevator Design. You are designing an elevator...Ch. 5 - || At night while it is dark, a driver...Ch. 5 - || A block of mass m is placed against the...Ch. 5 - Friction and climbing shoes. Shoes for the sports...Ch. 5 - Friction and climbing shoes. Shoes for the sports...Ch. 5 - Friction and climbing shoes. Shoes for the sports...
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