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STATEMENT-1 The kinetic energy gradient ...

STATEMENT-1 The kinetic energy gradient is proportional to acceleration of a particle moving along a straight line.
STATEMENT-2: Work done by net force is equal to increase in kinetic energy of a particle.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1

C

Statement-1 is True, Statement-2 is False

D

Statement-1 is False, Statement-2 is True

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given statements, we will break down each statement and provide a step-by-step solution. ### Step 1: Understanding Statement 1 **Statement 1:** The kinetic energy gradient is proportional to the acceleration of a particle moving along a straight line. - **Kinetic Energy (KE)** of a particle is given by the formula: \[ KE = \frac{1}{2} mv^2 \] where \( m \) is the mass and \( v \) is the velocity of the particle. - The **gradient of kinetic energy** with respect to displacement \( x \) can be expressed as: \[ \frac{d(KE)}{dx} = \frac{d}{dx} \left(\frac{1}{2} mv^2\right) \] - To find the relationship between kinetic energy and acceleration, we can use the chain rule: \[ \frac{d(KE)}{dx} = \frac{d(KE)}{dv} \cdot \frac{dv}{dx} \] where \( \frac{dv}{dx} \) is the acceleration \( a \). - Thus, we have: \[ \frac{d(KE)}{dx} = mv \cdot a \] This shows that the kinetic energy gradient is indeed proportional to acceleration. **Conclusion for Statement 1:** True. ### Step 2: Understanding Statement 2 **Statement 2:** Work done by net force is equal to the increase in kinetic energy of a particle. - This statement is a direct application of the **Work-Energy Theorem**, which states: \[ W = \Delta KE \] where \( W \) is the work done by the net force and \( \Delta KE \) is the change in kinetic energy. - The work done by a force is calculated as: \[ W = F \cdot d \] where \( F \) is the net force and \( d \) is the displacement. - According to the Work-Energy Theorem: \[ W = KE_{final} - KE_{initial} \] This confirms that the work done by the net force results in a change in kinetic energy. **Conclusion for Statement 2:** True. ### Final Conclusion Both statements are true. Statement 2 serves as a correct explanation for Statement 1 since it provides the foundational principle (Work-Energy Theorem) that supports the relationship stated in Statement 1. ### Answer Options - **Option A:** Statement 1 is true, Statement 2 is true, and Statement 2 is a correct explanation for Statement 1. (This is the correct option.)
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