JEE Main 202227 JulyEvening Shift
- Exam
- JEE Main
- Year
- 2022
- Date
- 27 July
- Shift
- Evening Shift
- Subject
- Physics
- Chapter
- Laws of Motion
JEE Main 2022 · 27 July · Evening Shift · Physics · Laws of Motion
A block of mass M slides down on a rough inclined plane with...
A block of mass slides down on a rough inclined plane with constant velocity. The angle made by the incline plane with horizontal is . The magnitude of the contact force will be :
Options
- A
- BMgcos\theta
- C
- DMgsin\theta\sqrt{1 + \mu}
Correct answer
A.
Step-by-step solution
As the block moves with constant velocity, so force on the block should be balanced. The forces acting on the block are its weight, normal contact force and friction. The contact force is vector sum of normal contact and friction. As the forces are balanced, the contact force should be equal and opposite to its weight.
Contact force