AIPMT 2010 Prelims | Laws of Motion Question 32 | Physics

A block of mass m is in contact with the cart C as shown in the figure.

The coefficient of static friction between the block and the cart is $$\mu $$. The acceleration $$\alpha $$ of the cart that will prevent the block from falling satisfies

AIPMT 2010 Prelims Physics - Laws of Motion Question 21 English

AIPMT 2010 Prelims Physics - Laws of Motion Question 21 English

$$\alpha > {{mg} \over \mu }$$

$$\alpha > {g \over {\mu m}}$$

$$\alpha \ge {g \over \mu }$$

$$\alpha < {g \over \mu }$$

AIPMT 2009

MCQ (Single Correct Answer)

-1

The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is :

4 m s^$$-$$2 upwards

4 m s^$$-$$2 downwards

14 m s^$$-$$2 upwards

30 m s^$$-$$2 downwards

AIPMT 2009

MCQ (Single Correct Answer)

-1

A body, under the action of a force $$\overrightarrow F = 6\widehat i - 8\widehat j + 10\widehat k,$$ acquires an accelerations of 1 m/s². The mass of this body must be

10 kg

20 kg

10$$\sqrt 2 $$ kg

2$$\sqrt {10} $$ kg

AIPMT 2008

MCQ (Single Correct Answer)

-1

A roller coaster is designed such that riders experience ''weightlessness'' as they go round the top of a hill whose radius of curvature is 20 m. The speed of the car at the top of the hill is between

16 m/s and 17 m/s

13 m/s and 14 m/s

14 m/s and 15 m/s

15 m/s and 16 m/s

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