ICSE Class 10: Work, Energy and Power Videos | Work and Energy
Work and Energy
Define work and calculate the work done if the direction of force and displacement is same, opposite, perpendicular to each other and at an angle.
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View All- Assertion (A): In real and Ideal conditions, work done by a mass tied at the end of a string, rotating uniformly in a circle, is zero. Reason (R): Work done is never zero in vacuum conditions. (a) Both (A) and (R) are true and (R) is the correct explanation of (A). (b) Both (A) and (R) are true but (R) is not the correct explanation of (A). (c) (A) is true but (R) is false. (d) Both (A) and (R) are false.
- Hi, Solve this question. A car of mass 120 kg is moving at a speed 18 km/h and it accelerates to attain a speed of 54 km/h in 5 seconds. Calculate: (a) the work done by the engine. (b) the power of the engine.
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