High School

A mass of 14.0 kg is hung in a pulley as shown in the picture. Both ends of the band are tied to the mass. What is the tensile force in the band?

A. 68.6 N
B. 137 N
C. 14 N
D. 0.71 N

Answer :

The tensile force in the band is equivalent to the weight of the mass. By multiplying the mass (14.0 kg) by the gravity (9.8 m/s²), we get a force of 137N. Therefore, the correct answer is B. 137N.

The tension in the band, also known as tensile force, will be equal to the weight of the mass because the pulley system is in a state of equilibrium with no acceleration. The weight of the mass can be calculated using Newton’s second law which states that the force is the product of mass and gravity. In this case, the force (weight) would be the mass (14.0 kg) multiplied by the gravity (9.8 m/s²). Therefore, the tensile force will be 14.0 kg * 9.8 m/s² = 137N. Thus, the main answer is B. 137N.

The tensile force in the band is equivalent to the weight of the mass. By multiplying the mass (14.0 kg) by the gravity (9.8 m/s²), we get a force of 137N. Therefore, the correct answer is B. 137N.

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