COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 4, Problem 69QAP
To determine
The downward force on the parachute from the person.
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Q2) A hockey puck having a mass of 0.3 kg slides on the horizontal, frictionless surfuce of an ice rink. Two
hockey sticks strike the puck simultaneously, exerting the forces on the puck shown in Figure 2. The force
Fi has a magnitude of 5 N, and the force F: has a magnitude of 8 N. Determine both the magnitude and the
direction of the puck's acceleration.
- 5ON
- KON
Fig 2
Question 9
A 13 kg object undergoes an acceleration given by a (4 î- 3) m/s?.
The magnitude of the resultant force acting on the object equals:
6) Problem 1: A 76-kg man stands on a bathroom scale in an elevator that accelerates upwards from rest to 11 m/s in 2.00 s.
Calculate the scale reading, in newtons, during this process (The scale exerts an upward force on him equal to its reading.)
Chapter 4 Solutions
COLLEGE PHYSICS
Ch. 4 - Prob. 1QAPCh. 4 - Prob. 2QAPCh. 4 - Prob. 3QAPCh. 4 - Prob. 4QAPCh. 4 - Prob. 5QAPCh. 4 - Prob. 6QAPCh. 4 - Prob. 7QAPCh. 4 - Prob. 8QAPCh. 4 - Prob. 9QAPCh. 4 - Prob. 10QAP
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- Two teams of nine members each engage in a tug of war. Each of the first team's members has an average mass of 68 kg and exerts an average force of 1350 N horizontally. Each of the second team's members has an average mass of 73 kg and exerts an average force of 1365 N horizontally. (a) What is magnitude of the acceleration of the two teams? (b) What is the tension in the section of rope between the teams?arrow_forwardDescribe a situation in which the net external force on a system is not zero, yet its speed remains constant.arrow_forwardA box rests on the (horizontal) back of a truck. The coefficient of static friction between the box and the surface on which it rests is 0.24. What maximum distance can the truck travel (starting from rest and moving horizontally with constant acceleration) in 3.0 s without having the box slide?arrow_forward
- A setup similar to the one shown in Figure P4.53 is often used in hospitals to support and apply a traction force to an injured leg. (a) Determine the force of tension in the rope supporting the leg. (b) What is the traction force exerted on the leg? Assume the traction force is horizontal. Figure P4.53arrow_forwardOnly one force acts on an object. Can the object have zero acceleration? Can it have zero velocity? Explain you answer in words.arrow_forward101. Two blocks connected by a light string are being pulled across a frictionless horizontal tabletop by a hang- ing 10-N weight (block C) (Figure 4-53). Block A has a mass of 2 kg. The mass of block B is only 1 kg. The blocks gain speed as they move toward the right, and the strings remain taut at all times. What are the values of the tensions T and T? SSM T2 A B. Carrow_forward
- 3- The student pushes horizontally on a 37 kg box with a force of 115 N. The coefficient friction between the box and the floor is 0.37. What is the frictional force on the crate from the floor? a- 115 b- 230 c-110 d-121arrow_forwardA box of mass 10 kg sits on a frictionless table. You push down on the box at angle of 30° with a force of 50 N. 30° 10) What is the acceleration of the box? A) 2.5 m/s² B4.3 m/s² C) 7.5 m/s² D) 9.8 m/s² E) 12.5 m/s² F = 50 N Box Tablearrow_forwardPROBLEM 2 • An elevator and its load have a total mass of 800kg.Find the tension in the supporting cable when the elevator or lift originally moving downwards at 10m/s is brought to rest with a constant acceleration in a distance 25m Answer T-9600N.Since T> W the system is retarding.arrow_forward
- Example 2 If the 1.0 kg brick is falling and experiencing a force of magnitude 2.0 N due to air resistance, what is the net force on the brick? ▶ Givenarrow_forward25 - A diver with a mass of 70 kg jumps from the 10.0 meter high tower for a direct-vertical dive. Its movement ends at 2.50 meters below the water level. Find the average drag force exerted by the water on the diver. A) 1.50 kN B) 4.12 kN C) 3.09 kN D) 5.34 kN E) 1.05 kNarrow_forwardProblem 2 A crate rests on the flatbed of a truck traveling at 15m/s on a level road. The driver applies the breaks and the truck is brought to a halt in a distance of 38m. If the deceleration of the truck is constant, what is the minimum coefficient of friction between the crate and the truck to keep the crate from falling: (a) 0.2 (b) 0.3 (c) 0.6 (d) cannot be determinedarrow_forward
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Newton's Second Law of Motion: F = ma; Author: Professor Dave explains;https://www.youtube.com/watch?v=xzA6IBWUEDE;License: Standard YouTube License, CC-BY