A rope extends between two poles. A 90 N boy hangs from it as shown in Fig. 1. Find the tensions in the two parts of the rope. 10 5.0° Fra Fig. A 200 N wagon is to be pulled up a 30° incline at constant speed (see Fig. 2). How large a force parallel to the incline is needed if friction effects are negligible? Fy sin 30° Fycos 30° 30 30° Fig. 2 A horizontal force of 140 N is needed to pull a 60 kg box across a horizontal floor at constant 23 speed. What is the coefficient of friction between floor and box? A 70 kg box is slid along the floor by a 400 N force. The coefficient of friction between the 4 box and the floor is 0.50 when the box is sliding. Find the acceleration of the box. A 70 kg box is pulled by a 400 N force at an angle of 30° to the horizontal. The coefficient 15 of kinetic friction is 0.50. Find the acceleration of the box. A 400 g block with an initial speed of 80 cm/s slides along a horizontal tabletop against a 6 friction force of 0.70 N. (a) How far will it slide before stopping? (b) What is the coefficient of friction between the block and the tabletop? 2.

A rope extends between two poles. A 90 N boy hangs from it as shown in Fig. 1. Find the tensions in the two parts of the rope. 10 5.0° Fra Fig. A 200 N wagon is to be pulled up a 30° incline at constant speed (see Fig. 2). How large a force parallel to the incline is needed if friction effects are negligible? Fy sin 30° Fycos 30° 30 30° Fig. 2 A horizontal force of 140 N is needed to pull a 60 kg box across a horizontal floor at constant 23 speed. What is the coefficient of friction between floor and box? A 70 kg box is slid along the floor by a 400 N force. The coefficient of friction between the 4 box and the floor is 0.50 when the box is sliding. Find the acceleration of the box. A 70 kg box is pulled by a 400 N force at an angle of 30° to the horizontal. The coefficient 15 of kinetic friction is 0.50. Find the acceleration of the box. A 400 g block with an initial speed of 80 cm/s slides along a horizontal tabletop against a 6 friction force of 0.70 N. (a) How far will it slide before stopping? (b) What is the coefficient of friction between the block and the tabletop? 2.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 26P: Find the tension in each of the three cables supporting the traffic light if it weighs

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Find the tension in each of the three cables supporting the traffic light if it weighs
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