AIEEE 2003 | Laws of Motion Question 116 | Physics

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

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 rocket with a lift-off mass $$3.5 \times {10^4}\,\,kg$$ is blasted upwards with an initial acceleration of $$10m/{s^2}.$$ Then the initial thrust of the blast is

$$3.5 \times {10^5}N$$

$$7.0 \times {10^5}N$$

$$14.0 \times {10^5}N$$

$$1.75 \times {10^5}N$$

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