Mathematics · Electrostatics
An inclined plane making an angle of 30° with the horizontal is placed in a uniform horizontal electric field of 200 N/C. A body of mass 1 kg and charge 5 mC is allowed to slide down from rest from a vertical height of 1 m. If the coefficient of friction between the body and the plane is 0.2, find the time taken by the body to reach the bottom. [Take g = 9.8 m/s2; sin 30° = 1/2; cos 30° = √3/2]
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12.3 s
- 20.46 s
- 31.3 s✓
- 40.92 s
Correct answer
1.3 s
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