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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

Two blocks of masses m and 2m are held in equilibrium on a frictionless incline as in Figure P4.57. In terms of m and θ, find (a) the magnitude of the tension T1 in the upper cord and (b) the magnitude of the tension T2 in the lower cord connecting the two blocks.

images

Figure P4.57

(a)

To determine
The tension on the upper cord.

Explanation

Given Info: Mass of the upper block is m. Mass of the lower block is 2m.

The free body diagram is given below.

  • N1 and N2 are the normal forces.
  • m and 2m are masses of the blocks.
  • T1 and T2 are the tension on the upper and the lower cords.
  • g is the acceleration due to gravity.
  • θ is the angle of inclination

(b)

To determine
The tension on the lower cord.

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