Can you explain the answer of this question below:A force a body of mass 3 kg producing a displacement of 10 m in it. The work done by force is of 6 N acts onA:30 JB:60 JC:18 JD:36 JThe answer is a.

Question

Answer

Here,

work done(W)=fdcos60degree

W=6×10×1/2

w=60/2

w=30j(Ans).

Answer

W=fs cos theeta

w=6*10*cos 60degree

w=6*10*1/2

w=30j. ans..

Answer

W=F*S

6*10=60J

Answer

Explanation:

Introduction:
An oscillating pendulum of a clock is a classic example of a system that exhibits periodic motion. The motion of the pendulum can be described as swinging back and forth between two extreme positions. As it swings, it possesses different forms of energy, which can be categorized into kinetic energy, potential energy, and mechanical energy.

Kinetic Energy:
- Kinetic energy is the energy possessed by an object due to its motion.
- In the case of an oscillating pendulum, the bob (the weight at the end of the pendulum) moves back and forth, resulting in its kinetic energy changing continuously.
- When the bob is at its highest point of displacement (either to the left or right), it momentarily comes to a stop before changing direction.
- At this point, the kinetic energy is zero because the bob has no motion.
- However, as the bob starts to move down, its speed increases, and therefore its kinetic energy also increases.
- At the lowest point of displacement, the bob has maximum kinetic energy because it is moving at its maximum speed.

Potential Energy:
- Potential energy is the energy possessed by an object due to its position or configuration.
- In the case of an oscillating pendulum, the bob reaches its highest point of displacement when it momentarily comes to a stop before changing direction.
- At this point, the bob has maximum potential energy because it is at its maximum height above the equilibrium position.
- As the bob starts to move down, its potential energy decreases because its height decreases.
- At the lowest point of displacement, the bob has minimum potential energy because it is at its lowest height.

Restoring Energy:
- The term 'restoring energy' is not a commonly used term in the context of a pendulum.
- It seems to be a misconception or a misinterpretation of the concept.
- The energy involved in the motion of a pendulum can be described in terms of kinetic energy, potential energy, and mechanical energy, but not specifically as 'restoring energy.'

Mechanical Energy:
- Mechanical energy is the sum of kinetic energy and potential energy in a system.
- In the case of an oscillating pendulum, as the bob moves back and forth, its kinetic energy and potential energy continuously interchange.
- At any point during the motion, the sum of the kinetic energy and potential energy remains constant, resulting in a constant mechanical energy.
- Therefore, the energy possessed by an oscillating pendulum of a clock is correctly categorized as mechanical energy.

In Conclusion:
The energy possessed by an oscillating pendulum of a clock can be categorized as mechanical energy, which is the sum of kinetic energy and potential energy. The bob of the pendulum experiences changes in its kinetic and potential energies as it swings back and forth, but the total mechanical energy remains constant throughout the motion.

Answer

30 J

Answer

30

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