The box with a weight of 6 lb slides down the smooth surface that has a circular portion AB. If the speed of the box is 8 ft/sec at A, calculate the magnitude of the normal force acting on the box at C. Present your answer in lb using 3 significant figures. The following relations may be useful: sin(A + B)=sin A cos B+cos A-sin B cos(A + B) = cos A cos B sin A-sin B B 45° 8= 30° 20 ft 8 ft/s A 45°

The box with a weight of 6 lb slides down the smooth surface that has a circular portion AB. If the speed of the box is 8 ft/sec at A, calculate the magnitude of the normal force acting on the box at C. Present your answer in lb using 3 significant figures. The following relations may be useful: sin(A + B)=sin A cos B+cos A-sin B cos(A + B) = cos A cos B sin A-sin B B 45° 8= 30° 20 ft 8 ft/s A 45°

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Basic Terminology in Mechanics

The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.

Question

The box with a weight of 6 lb slides down the
smooth surface that has a circular portion AB. If
the speed of the box is 8 ft/sec at A, calculate the
magnitude of the normal force acting on the box
at C. Present your answer in lb using 3
significant figures. The following relations may
be useful:
sin(A + B)=sin A
c
·cos B±cos A-sin B
cos(A + B) = cos A cos B sin A-sin B
45°
B
0=30°
20 ft
8 ft/s
A
45°

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