Miscellaneous Test

Result

Miscellaneous Test - 68

Score
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Weekly Quiz Competition

Question 1
4 / -1

A particle of mass m falls from rest at a height of 16 m and is brought to rest by penetrating 1/6 m into the ground. If the average vertical thrust exerted by the ground be 388 kg. wt, then the mass of the particle is

A
2kg

B
3kg

C
4kg

D
8kg

Solution
Question 2
4 / -1

A light string passing over a light smooth pulley carries masses of 3 kg and 5 kg at its ends. If the string breaks after the masses have moved 9 m, then the 3 kg mass will farther rise (g = 10 m/sec²)

A
1.75 m

B
1.95 m

C
2.05 m

D
2.25 m

Solution
Question 3
4 / -1

A light string passing over a light smooth pulley carries masses of 3 kg and 5 kg at its ends. If the string is allowed to move from the rest the acceleration of the motion is equal to

A

B

C

D

Solution
Question 4
4 / -1

Two bodies of mass 8 and 10 gm is attached to a light rope which is passing over a smooth pulley. If this system is given to a velocity 3/16 g cm/sec, then small body will move downwards and heavy body will move upwards, then after what time they will move in opposite directions?

A

B

C

D

Solution
Question 5
4 / -1

Two masses m₁ and m₂ are connected by a light inextensible string and suspended over a smooth fixed pulley. Then

A

B

C

D
Question 6
4 / -1

Two masses are attached to the pulley as shown in fig., find acceleration of centre of mass

A

B

C

D

Solution
Question 7
4 / -1

Two equal perfectly elastic balls impinges directly, then after impact they

A
Are at rest

B
Interchange their velocities

C
Move with the same velocity

D
Move with twice velocities
Question 8
4 / -1

A sphere impinges directly on an equal sphere at rest. If the coefficient of restitution is e, their velocities after the impact are as

A
1 : e

B
e : 1

C
1 + e : 1 – e

D
1 – e : 1 + e

Solution
Question 9
4 / -1

A ball is dropped from a height of 22.5 metre on a fixed horizontal plane. If e =2/5, then it will stop rebounding after

A
5 sec

B
6 sec

C
7 sec

D
8 sec

Solution
Question 10
4 / -1

An elastic ball with coefficient of elasticity 1/2 is dropped from rest at a height h on a smooth floor. The total distance covered by the ball is

A
More than 2h

B
Less than 2h but more than (3/2) h

C
Less than (3/2) h but more than (4/3) h

D
Less then (4/3) h

Solution