Friction PYQs Set 7 (PDF)

Set 7 of 7 · Questions 181-182 of 182

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Mere Teacher · Previous Year Questions JEE Main Physics · Friction · Set 7 (Q181-182)
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181. $A block of mass M slides down on a rough inclined plane with constant velocity. The angle made by the incline plane with horizontal is 0. The magnitude of the contact force will be:$ (1) $Mg$ (2) $Mg cos θ$ (3) $M g sin θ + M g cos θ$ (4) $M g sin θ 1 + μ$ 182. $A block of mass m is placed on a smooth inclined wedge ABC of inclination θ as shown in the figure. The wedge is given an acceleration 'a' towards the right. The relation between a and θ for the block to remain stationary on the wedge is$ (1) $a = \frac{g}{cosec θ}$ (2) $a = g tan θ$ (3) $a = g cos θ$ (4) $a = \frac{g}{s in θ}$