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Chapter 7: Q. 12 (page 176)

The figure shows two masses at rest. The string is massless and the pulleys are frictionless. The spring scale reads in kg. What is the reading of the scale?

Short Answer

Expert verified

The reading of the spring scale is5kg.

Step by step solution

01

Given information

The figure shows two masses of5kg at rest. The string is massless and the pulleys are frictionless.

02

Explanation

The masses attached at the ends of the string will exert equal force on the string.

Since the pulley is frictionless and string is massless the tension will remain constant throughout the string and the tension will be equal to weight of 5 kg .

hence the reading of the spring scale will be 5kg.

03

Final answer

The spring scale reading is5kg.

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Most popular questions from this chapter

FIGUREP7.39shows a block of mass m resting on a 20°slope. The block has coefficients of frictionμs=0.80 andμk=0.50 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 2.0kg.

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