AIEEE 2003 | Laws of Motion Question 140 | Physics

A horizontal force of $$10$$ $$N$$ is necessary to just hold a block stationary against a wall. The coefficient of friction between the block and the wall is $$0.2$$. The weight of the block is AIEEE 2003 Physics - Laws of Motion Question 133 English

AIEEE 2003 Physics - Laws of Motion Question 133 English

$$20N$$

$$50N$$

$$100N$$

$$2N$$

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

AIEEE 2003

MCQ (Single Correct Answer)

-1

A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads $$49$$ $$N,$$ when the lift is stationary. If the lift moves downward with an acceleration of $$5 m/{s^2}$$, the reading of the spring balance will be

$$24$$ $$N$$

$$74$$ $$N$$

$$15$$ $$N$$

$$49$$ $$N$$

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

$$0.02$$

$$0.03$$

$$0.04$$

$$0.06$$

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