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5. A block weighing 10.0 newtons is on a ramp inclined at 30.0° to the horizontal. A 3.0-newton force of friction, Fr, acts on the block as it is pulled up the ramp at constant velocity with force F, which is parallel to the ramp, as shown in the diagram below. v (constant)- 10.0 N F = 3.0 N 30.0° Horizontal (Vectors not drawn to scale) What is the magnitude of force F? A) 7.0 N B) 8.0 N C) 10 N D) 13 N

5. A block weighing 10.0 newtons is on a ramp inclined at 30.0° to the horizontal. A 3.0-newton force of friction, Fr, acts on the block as it is pulled up the ramp at constant velocity with force F, which is parallel to the ramp, as shown in the diagram below. v (constant)- 10.0 N F = 3.0 N 30.0° Horizontal (Vectors not drawn to scale) What is the magnitude of force F? A) 7.0 N B) 8.0 N C) 10 N D) 13 N

College Physics
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)...
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5. A block weighing 10.0 newtons is on a ramp inclined at 30.0° to the horizontal. A 3.0-newton force of friction, Fr, acts on the block as it is pulled up the ramp at constant velocity with force F, which is parallel to the ramp, as shown in the diagram below. v (constant)- 10.0 N F = 3.0 N al 30.0° Horizontal (Vectors not drawn to scale) What is the magnitude of force F? A) 7.0 N B) 8.0 N C) 10 N D) 13 N at 6. Two spheres, A and B, are simultaneously projected horizontally from the top of a tower. Sphere A has a horizontal speed of 40. meters per second and sphere B has a horizontal speed of 20. meters per second. Which statement best describes the time required for the spheres to reach the ground and the horizontal distance they travel? [Neglect friction and assume the ground is level.] A) Both spheres hit the ground at the same time and at the same distance from the base of the tower. B) Both spheres hit the ground at the same time, but sphere A lands twice as far as sphere B from the base of the tower. C) Both spheres hit the ground at the same time, but sphere B lands twice as far as sphere A from the base of the tower. le D) Sphere A hits the ground before sphere B, and sphere A lands twice as far as sphere B from the base of the tower 7. Equilibrium exists in a system where three forces are acting concurrently on an object. If the system includes a 5.0-newton force due north and a 2.0-newton force due south, the third force must be A) 7.0 N south C) 3.0 N south B) 7.0 N north D) 3.0 N north
Transcribed Image Text:5. A block weighing 10.0 newtons is on a ramp inclined at 30.0° to the horizontal. A 3.0-newton force of friction, Fr, acts on the block as it is pulled up the ramp at constant velocity with force F, which is parallel to the ramp, as shown in the diagram below. v (constant)- 10.0 N F = 3.0 N al 30.0° Horizontal (Vectors not drawn to scale) What is the magnitude of force F? A) 7.0 N B) 8.0 N C) 10 N D) 13 N at 6. Two spheres, A and B, are simultaneously projected horizontally from the top of a tower. Sphere A has a horizontal speed of 40. meters per second and sphere B has a horizontal speed of 20. meters per second. Which statement best describes the time required for the spheres to reach the ground and the horizontal distance they travel? [Neglect friction and assume the ground is level.] A) Both spheres hit the ground at the same time and at the same distance from the base of the tower. B) Both spheres hit the ground at the same time, but sphere A lands twice as far as sphere B from the base of the tower. C) Both spheres hit the ground at the same time, but sphere B lands twice as far as sphere A from the base of the tower. le D) Sphere A hits the ground before sphere B, and sphere A lands twice as far as sphere B from the base of the tower 7. Equilibrium exists in a system where three forces are acting concurrently on an object. If the system includes a 5.0-newton force due north and a 2.0-newton force due south, the third force must be A) 7.0 N south C) 3.0 N south B) 7.0 N north D) 3.0 N north
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