AIEEE 2004 | Laws of Motion Question 121 | Physics

A block rests on a rough inclined plane `making an angle of $${30^ \circ }$$ with the horizontal. The coefficient of static friction between the block and the plane is $$0.8.$$ If the frictionless force on the block is $$10$$ $$N,$$ the mass of the block (in $$kg$$) is $$\left( {take\,\,\,g\, = \,10\,\,m/{s^2}} \right)$$

$$1.6$$

$$4.0$$

$$2.0$$

$$2.5$$

AIEEE 2003

MCQ (Single Correct Answer)

-1

A marble block of mass $$2$$ $$kg$$ lying on ice when given a velocity of $$6$$ $$m/s$$ is stopped by friction in $$10$$ $$s.$$ Then the coefficient of friction is

$$0.02$$

$$0.03$$

$$0.04$$

$$0.06$$

AIEEE 2003

MCQ (Single Correct Answer)

-1

A block of mass $$M$$ is pulled along a horizontal frictionless surface by a rope of mass $$m.$$ If a force $$P$$ is applied at the free end of the rope, the force exerted by the rope on the block is

$${{Pm} \over {M + m}}$$

$${{Pm} \over {M - m}}$$

$$P$$

$${{PM} \over {M + m}}$$

AIEEE 2003

MCQ (Single Correct Answer)

-1

A light spring balance hangs from the hook of the other light spring balance and a block of mass $$M$$ $$kg$$ hangs from the former one. Then the true statement about the scale reading is

Both the scales read $$M$$ $$kg$$ each

The scale of the lower one reads $$M$$ $$kg$$ and of the upper one zero

The reading of the two scales can be anything but the sum of the reading will be $$M$$ $$kg$$

Both the scales read $$M/2$$ $$kg$$ each

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