Moderate

When the applied force and covered displacement are parallel to each other than work done of the body is:

Correct answer: C. Maximum

  • A. Zero
  • B. Negative
  • C. Maximum
  • D. Minimum

Explanation

When the applied force and the displacement are parallel to each other, the work done on the body is maximum. Let's explore each option: A) Zero: When the applied force and displacement are parallel, the angle between them is 0 degrees. In this case, the work done is given by the formula: Work = Force x Displacement x cos(θ) Since the angle θ is 0 degrees, the cosine of 0 is 1. Therefore, the work done is nonzero and not zero. B) Negative: When the applied force and displacement are parallel, the angle between them is 0 degrees. The work done is calculated by multiplying the magnitude of the force, the magnitude of displacement, and the cosine of the angle between them. Since the angle is 0, the cosine is positive. Therefore, the work done is positive and not negative. C) Maximum: This is the correct answer. When the applied force and displacement are parallel, the angle between them is 0 degrees. The cosine of 0 degrees is 1. As a result, the work done is maximum. This occurs because the force is directly contributing to the displacement, resulting in the maximum amount of work being done. D) Minimum: When the applied force and displacement are parallel, the angle between them is 0 degrees. The work done is given by the formula: Work = Force x Displacement x cos(θ) Since the angle theta is 0 degrees, the cosine of 0 is 1. Therefore, the work done is not minimum, but rather maximum. In summary, when the applied force and covered displacement are parallel to each other, the work done on the body is maximum. Hence, the correct answer is C) Maximum.

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About Work and Energy

Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.

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